A Study on the Safety, Reactogenicity, and Immune Response to the GVGH iNTS-GMMA Vaccine Against Invasive Nontyphoidal Salmonella in Adults, Children, and Infants

A Phase IIa Observer-Blind, Randomized, Controlled, Age-De-Escalation, Single Center Interventional Study to Evaluate the Safety, Reactogenicity, and Immune Response of the GVGH iNTS Vaccine Against S. Typhimurium and S. Enteritidis, in Adults, Children and Infants, in Africa

The purpose of this study is to evaluate the safety, reactogenicity, and immune response of the GlaxoSmithKline (GSK) Vaccines Institute for Global Health (GVGH) invasive nontyphoidal Salmonella-generalized modules for membrane antigens (iNTS-GMMA) candidate vaccine against S. Typhimurium and S. Enteritidis with an age de-escalation and dose escalation approach in African population, starting with adults (18-50 years of age), then in children (24-59 months of age) and finally in infants (9 months and 6 weeks of age). Infants are the target for primary vaccination from 6 weeks of age.

Study Overview

• Status: Active, not recruiting
• Conditions: Salmonella Infections
• Intervention / Treatment: Drug: Placebo; Combination product: DTPa-HBV-IPV+Hib; Biological: iNTS-GMMA Dose C; Biological: MenACWY; Biological: iNTS-GMMA Dose B; Biological: iNTS-GMMA Dose A; Biological: Measles and Rubella vaccine; Biological: Yellow Fever vaccine

Detailed Description

The study will be conducted as follows:

• Adult participants will receive either iNTS-GMMA Dose C (high) or a control vaccine intramuscularly on Day 1 and Day 57.
• Child participants will receive either Dose B (medium) or Dose C (high) of the candidate vaccine or the control on Day 1 and Day 57.
• Infant participants (9 months of age) will receive either Dose A (low), Dose B (medium), or Dose C (high) of the candidate vaccine or the control on Day 1, Day 85, and Day 169.
• Infant participants (6 weeks of age) will receive either Dose A (low), Dose B (medium), or Dose C (high) of the candidate vaccine or the control on Day 1, Day 57 and Day 232.

• Study Type: Interventional
• Enrollment (Actual): 215
• Phase: Phase 2

Contacts and Locations

Study Locations

• Ghana
  • Kumasi, Ghana
    • GSK Investigational Site

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Child; Adult
• Accepts Healthy Volunteers: Yes

Description

Inclusion criteria:

All participants (adults, children, infants at 9 months of age and infants at 6 weeks of age) will be enrolled in the clinical site in Ghana and must satisfy ALL the following criteria at study entry:

• Participants and/or participants' parent(s)/Legally Acceptable Representative(s) (LAR), who, in the opinion of the investigator, can and will comply with the requirements of the protocol (e.g., completion of the diary cards, return for follow-up visits).
• Written or witnessed/thumb printed informed consent obtained from the participant/parent(s)/LAR(s) of the participant prior to performance of any study-specific procedure.
• Healthy participants as established by medical history, clinical examination, and laboratory investigations.
• Participants satisfying screening requirements.
• Participants negative for human immunodeficiency virus (HIV), hepatitis B, and hepatitis C.

Adult participants must satisfy ALL the following criteria in the study entry:

• A male or female between and including 18 and 50 years of age at the time of the first study intervention administration.
• Female participants of non-childbearing potential may be enrolled in the study. Non-childbearing potential is defined as pre-menarche, current bilateral tubal ligation or occlusion, hysterectomy, bilateral ovariectomy or post-menopause.

• Female participants of childbearing potential may be enrolled in the study, if the participant:

  • has practiced adequate contraception for 1 month prior to the study intervention administration, and
  • has a negative pregnancy test on the day of study intervention administration, and
  • has agreed to continue adequate contraception during the entire treatment period and for 1 month after completion of the study intervention administration series.

The Ghana card will be used as source document to verify the ages for the adults.

Child participants must satisfy ALL the following criteria at study entry:

• A male or female between and including 24 and 59 months of age at the time of the first study intervention administration.
• Previously completed routine childhood vaccinations to the best knowledge of the participant's parent(s)/LAR's.
• Born after a gestation period of ≥37 weeks.

Infant participants must satisfy ALL the following criteria at study entry:

• A male or female 6 weeks or 9 months of age at the time of the first study intervention administration.
• Born after a gestation period of ≥37 weeks.
• Born to a mother seronegative for HIV, hepatitis B virus and hepatitis C virus.

The Road to Health Chart will be used as source document to confirm the ages for the children and infants.

Exclusion criteria:

Medical conditions

• Known exposure to S. Typhimurium or S. Enteritidis during the period starting at birth for infants and children, and at 3 years for adults, as documented by patient records
• History of any reaction or hypersensitivity likely to be exacerbated by any component of the study interventions.
• Hypersensitivity, including allergy, to medicinal products or medical equipment whose use is foreseen in this study.
• Progressive, unstable, or uncontrolled clinical conditions.
• Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination
• Major congenital defects, as assessed by the investigator.
• Acute or chronic clinically significant pulmonary, cardiovascular, hepatic, or renal functional abnormality, as determined by physical examination or laboratory screening tests.
• Acute disease and/or fever at the time of enrollment (fever is defined as temperature ≥ 38.0°C).
• Recurrent history or uncontrolled neurological disorders or seizures.
• Any clinically significant hematological and/or biochemical laboratory abnormality.
• Undernutrition defined as World Health Organization (WHO) Z-score less than -2 standard deviation (SD).
• Malaria infection defined as the presence of asexual parasites in the blood.
• Clinical conditions representing a contraindication to intramuscular vaccination and blood draws.
• Any behavioral or cognitive impairment or psychiatric disease that, in the opinion of the investigator, may interfere with the participant's ability to participate in the study.
• Any other clinical condition that, in the opinion of the investigator, might pose additional risk to the participant due to participation in the study.

Prior/Concomitant therapy

• History of receiving any investigational iNTS or GMMA vaccines in the participant's life.
• Use of any investigational or non-registered product other than the study interventions during the period beginning 30 days before the first dose of study interventions, or their planned use during the study period.
• Planned administration/administration of a vaccine not foreseen by the study protocol in the period starting 14 days before each dose and ending 28 days after the last dose of study interventions administration, with the exception of flu vaccines and vaccines administered as part of a public health vaccination campaign.

• A vaccine not foreseen by the study protocol administered during the period starting at 14 days before the first dose and ending 14 days after the last dose of study interventions administration for live vaccines or 7 days in case of inactivated vaccines*, with the exception of flu vaccines or COVID-19 vaccine which may be considered on a case-by-case basis.

  • If emergency mass vaccination for an unforeseen public health threat (e.g., a pandemic) is organized by public health authorities outside the routine immunization program, the time period described above can be reduced if, provided it is used according to the local governmental recommendations and Sponsor is notified.

Under such circumstances, a participant may be considered eligible for study enrollment and/or study intervention administration after the appropriate window for delay has passed and inclusion/exclusion criteria have been re-checked, and if the participant is confirmed to be eligible.

• Administration of long-acting immune-modifying drugs at any time during the study period.
• Administration of immunoglobulins and/or any blood products or plasma derivatives from birth (for infants 6 weeks of age) or during the period starting 3 months before the administration of the first dose of study intervention(s) or planned administration during the study period.
• Chronic administration (defined as more than 14 days in total) of immunosuppressants or other immune-modifying drugs during the period starting 3 months prior to the first study intervention dose(s) up to the end of the study. For corticosteroids, this will mean prednisone equivalent >=20 mg/day for adult participants/ >=0.5 mg/kg/day with maximum of 20 mg/day for pediatric participants (infants and children). Inhaled and topical steroids are allowed.

Prior/Concurrent clinical study experience

• Concurrently participating in another clinical study, at any time during the study period, in which the participant has been or will be exposed to an investigational or a non-investigational intervention (vaccine, drug and device).

Other exclusions

• Pregnant or lactating female.
• Female planning to become pregnant or planning to discontinue contraceptive precautions.
• History of/current chronic alcohol consumption and/or drug abuse. This will be decided at the discretion of the investigator.
• Any study personnel or their immediate dependents, family, or household members.
• Child in care.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Sequential Assignment
• Masking: Quadruple

Number of Arms

18

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Adults_Dose C Group; Adults, 18-50 years of age, will receive 2 doses of the iNTS-GMMA Dose C (high dose) vaccine at Day 1 and Day 57.	Biological: iNTS-GMMA Dose C; -2 doses of iNTS-GMMA Dose C vaccine administered intramuscularly, at Day 1 and Day 57 to adults and children in the Adults_Dose C and Children_Dose C groups; -3 doses of iNTS-GMMA Dose C vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants_9M_Dose C group, and at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Dose C group.
Active Comparator: Adults_Control Group; Adults, 18-50 years of age, will receive 1 dose of the MenACWY vaccine at Day 1 and 1 dose of Placebo at Day 57.	Drug: Placebo; 1 dose of Placebo administered intramuscularly at Day 57 to adults in the Adults_Control group.; Biological: MenACWY; -1 dose of MenACWY vaccine administered intramuscularly at Day 1 to adults in the Adults_Control group; -2 doses of MenACWY vaccine administered intramuscularly at Day 1 and Day 57 to children in the Children_Control B and Children_Control C groups, and at Day 1 and Day 85 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups; -3 doses of MenACWY vaccine administered intramuscularly at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Control A, Infants_6W_Control B and Infants_6W_Control C groups. A 4th dose of MenACWY vaccine is administered after the trial ends, to infants in the aforementioned study groups, as per the licensed indication and in private vaccination settings.; Other Names: Menveo
Experimental: Children_Dose B Group; Children, 24-59 months of age, will receive 2 doses of the iNTS-GMMA Dose B (medium dose) vaccine at Day 1 and Day 57.	Biological: iNTS-GMMA Dose B; -2 doses of iNTS-GMMA Dose B vaccine administered intramuscularly, at Day 1 and Day 57 to children in the Children_Dose B group; -3 doses of iNTS-GMMA Dose B vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants_9M_Dose B group, and at Day 1, Day 57 and Day at 232 to infants in the Infants_6W_Dose B group.
Active Comparator: Children_Control B Group; Children, 24-59 months of age, will receive 2 doses of the MenACWY vaccine at Day 1 and Day 57.	Biological: MenACWY; -1 dose of MenACWY vaccine administered intramuscularly at Day 1 to adults in the Adults_Control group; -2 doses of MenACWY vaccine administered intramuscularly at Day 1 and Day 57 to children in the Children_Control B and Children_Control C groups, and at Day 1 and Day 85 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups; -3 doses of MenACWY vaccine administered intramuscularly at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Control A, Infants_6W_Control B and Infants_6W_Control C groups. A 4th dose of MenACWY vaccine is administered after the trial ends, to infants in the aforementioned study groups, as per the licensed indication and in private vaccination settings.; Other Names: Menveo
Experimental: Children_Dose C Group; Children, 24-59 months of age, will receive 2 doses of the iNTS-GMMA Dose C (high dose) vaccine at Day 1 and Day 57.	Biological: iNTS-GMMA Dose C; -2 doses of iNTS-GMMA Dose C vaccine administered intramuscularly, at Day 1 and Day 57 to adults and children in the Adults_Dose C and Children_Dose C groups; -3 doses of iNTS-GMMA Dose C vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants_9M_Dose C group, and at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Dose C group.
Active Comparator: Children_Control C Group; Children, 24-59 months of age, will receive 2 doses of the MenACWY vaccine at Day 1 and Day 57.	Biological: MenACWY; -1 dose of MenACWY vaccine administered intramuscularly at Day 1 to adults in the Adults_Control group; -2 doses of MenACWY vaccine administered intramuscularly at Day 1 and Day 57 to children in the Children_Control B and Children_Control C groups, and at Day 1 and Day 85 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups; -3 doses of MenACWY vaccine administered intramuscularly at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Control A, Infants_6W_Control B and Infants_6W_Control C groups. A 4th dose of MenACWY vaccine is administered after the trial ends, to infants in the aforementioned study groups, as per the licensed indication and in private vaccination settings.; Other Names: Menveo
Experimental: Infants_9M_Dose A Group; Infants, 9 months of age, will receive 3 doses of the iNTS-GMMA Dose A (low dose) vaccine at Day 1, Day 85 and Day 169. These infants will also receive an Expanded Program on Immunization (EPI) vaccination with Measles and Rubella Vaccine (MR-VAC) and Yellow Fever (YF) vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.	Biological: iNTS-GMMA Dose A; 3 doses of iNTS-GMMA Dose A vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants_9M_Dose A group, and at Day 1, Day 57 and Day at 232 to infants in the Infants_6W_Dose A group.; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.
Active Comparator: Infants_9M_Control A Group; Infants, 9 months of age, will receive 2 doses of the MenACWY vaccine at Day 1 and Day 85 and 1 dose of the DTPa-HBV-IPV+Hib vaccine at Day 169. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.	Combination product: DTPa-HBV-IPV+Hib; 1 dose of DTPa-HBV-IPV+Hib vaccine administered intramuscularly at Day 169 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups.; Other Names: Infanrix hexa; Biological: MenACWY; -1 dose of MenACWY vaccine administered intramuscularly at Day 1 to adults in the Adults_Control group; -2 doses of MenACWY vaccine administered intramuscularly at Day 1 and Day 57 to children in the Children_Control B and Children_Control C groups, and at Day 1 and Day 85 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups; -3 doses of MenACWY vaccine administered intramuscularly at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Control A, Infants_6W_Control B and Infants_6W_Control C groups. A 4th dose of MenACWY vaccine is administered after the trial ends, to infants in the aforementioned study groups, as per the licensed indication and in private vaccination settings.; Other Names: Menveo; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.
Experimental: Infants_9M_Dose B Group; Infants, 9 months of age, will receive 3 doses of the iNTS-GMMA Dose B (medium dose) vaccine at Day 1, Day 85 and Day 169. These infants will also receive an EPI vaccination withMR-VAC and YF vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.	Biological: iNTS-GMMA Dose B; -2 doses of iNTS-GMMA Dose B vaccine administered intramuscularly, at Day 1 and Day 57 to children in the Children_Dose B group; -3 doses of iNTS-GMMA Dose B vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants_9M_Dose B group, and at Day 1, Day 57 and Day at 232 to infants in the Infants_6W_Dose B group.; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.
Active Comparator: Infants_9M_Control B Group; Infants, 9 months of age, will receive 2 doses of the MenACWY vaccine at Day 1 and Day 85 and 1 dose of the DTPa-HBV-IPV+Hib vaccine at Day 169. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.	Combination product: DTPa-HBV-IPV+Hib; 1 dose of DTPa-HBV-IPV+Hib vaccine administered intramuscularly at Day 169 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups.; Other Names: Infanrix hexa; Biological: MenACWY; -1 dose of MenACWY vaccine administered intramuscularly at Day 1 to adults in the Adults_Control group; -2 doses of MenACWY vaccine administered intramuscularly at Day 1 and Day 57 to children in the Children_Control B and Children_Control C groups, and at Day 1 and Day 85 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups; -3 doses of MenACWY vaccine administered intramuscularly at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Control A, Infants_6W_Control B and Infants_6W_Control C groups. A 4th dose of MenACWY vaccine is administered after the trial ends, to infants in the aforementioned study groups, as per the licensed indication and in private vaccination settings.; Other Names: Menveo; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.
Experimental: Infants_9M_Dose C Group; Infants, 9 months of age, will receive 3 doses of the iNTS-GMMA Dose C (high dose) vaccine at Day 1, Day 85 and Day 169. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.	Biological: iNTS-GMMA Dose C; -2 doses of iNTS-GMMA Dose C vaccine administered intramuscularly, at Day 1 and Day 57 to adults and children in the Adults_Dose C and Children_Dose C groups; -3 doses of iNTS-GMMA Dose C vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants_9M_Dose C group, and at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Dose C group.; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.
Active Comparator: Infants_9M_Control C Group; Infants, 9 months of age, will receive 2 doses of the MenACWY vaccine at Day 1 and Day 85 and 1 dose of the DTPa-HBV-IPV+Hib vaccine at Day 169. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the first study intervention administration occurring at Day 1, at the local EPI vaccination centers, and not part of the current clinical trial.	Combination product: DTPa-HBV-IPV+Hib; 1 dose of DTPa-HBV-IPV+Hib vaccine administered intramuscularly at Day 169 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups.; Other Names: Infanrix hexa; Biological: MenACWY; -1 dose of MenACWY vaccine administered intramuscularly at Day 1 to adults in the Adults_Control group; -2 doses of MenACWY vaccine administered intramuscularly at Day 1 and Day 57 to children in the Children_Control B and Children_Control C groups, and at Day 1 and Day 85 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups; -3 doses of MenACWY vaccine administered intramuscularly at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Control A, Infants_6W_Control B and Infants_6W_Control C groups. A 4th dose of MenACWY vaccine is administered after the trial ends, to infants in the aforementioned study groups, as per the licensed indication and in private vaccination settings.; Other Names: Menveo; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.
Experimental: Infants_6W_Dose A Group; Infants, 6 weeks of age, will receive 3 doses of the iNTS-GMMA Dose A (low dose) vaccine at Day 1, Day 57 and at Day 232. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.	Biological: iNTS-GMMA Dose A; 3 doses of iNTS-GMMA Dose A vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants_9M_Dose A group, and at Day 1, Day 57 and Day at 232 to infants in the Infants_6W_Dose A group.; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.
Active Comparator: Infants_6W_Control A Group; Infants, 6 weeks of age, will receive 3 doses of the MenACWY vaccine at Day 1, Day 57 and at Day 232 To allow completion of the vaccination schedule, a fourth dose of the MenACWY vaccine is administered after the trial ends, as per the licensed indication and in private vaccination settings. These infants also will receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.	Biological: MenACWY; -1 dose of MenACWY vaccine administered intramuscularly at Day 1 to adults in the Adults_Control group; -2 doses of MenACWY vaccine administered intramuscularly at Day 1 and Day 57 to children in the Children_Control B and Children_Control C groups, and at Day 1 and Day 85 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups; -3 doses of MenACWY vaccine administered intramuscularly at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Control A, Infants_6W_Control B and Infants_6W_Control C groups. A 4th dose of MenACWY vaccine is administered after the trial ends, to infants in the aforementioned study groups, as per the licensed indication and in private vaccination settings.; Other Names: Menveo; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.
Experimental: Infants_6W_Dose B Group; Infants, 6 weeks of age, will receive 3 doses of the iNTS-GMMA Dose B (medium dose) vaccine at Day 1, Day 57 and at Day 232. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.	Biological: iNTS-GMMA Dose B; -2 doses of iNTS-GMMA Dose B vaccine administered intramuscularly, at Day 1 and Day 57 to children in the Children_Dose B group; -3 doses of iNTS-GMMA Dose B vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants_9M_Dose B group, and at Day 1, Day 57 and Day at 232 to infants in the Infants_6W_Dose B group.; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.
Active Comparator: Infants_6W_Control B Group; Infants ,6 weeks of age, will receive 3 doses of the MenACWY vaccine at Day 1, Day 57 and at Day 232. To allow completion of the vaccination schedule, a fourth dose of the MenACWY vaccine is administered after the trial ends, as per the licensed indication and in private vaccination settings. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.	Biological: MenACWY; -1 dose of MenACWY vaccine administered intramuscularly at Day 1 to adults in the Adults_Control group; -2 doses of MenACWY vaccine administered intramuscularly at Day 1 and Day 57 to children in the Children_Control B and Children_Control C groups, and at Day 1 and Day 85 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups; -3 doses of MenACWY vaccine administered intramuscularly at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Control A, Infants_6W_Control B and Infants_6W_Control C groups. A 4th dose of MenACWY vaccine is administered after the trial ends, to infants in the aforementioned study groups, as per the licensed indication and in private vaccination settings.; Other Names: Menveo; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.
Experimental: Infants_6W_Dose C Group; Infants ,6 weeks of age, will receive 3 doses of the iNTS-GMMA Dose C (high dose) vaccine at Day 1, Day 57 and at Day 232. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.	Biological: iNTS-GMMA Dose C; -2 doses of iNTS-GMMA Dose C vaccine administered intramuscularly, at Day 1 and Day 57 to adults and children in the Adults_Dose C and Children_Dose C groups; -3 doses of iNTS-GMMA Dose C vaccine administered intramuscularly, at Day 1, Day 85 and Day 169 to infants in the Infants_9M_Dose C group, and at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Dose C group.; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.
Active Comparator: Infants_6W_Control C Group; Infants ,6 weeks of age, will receive 3 doses of the MenACWY vaccine at Day 1, Day 57 and at Day 232. To allow completion of the vaccination schedule, a fourth dose of the MenACWY vaccine is administered after the trial ends, as per the licensed indication and in private vaccination settings. These infants will also receive an EPI vaccination with MR-VAC and YF vaccine at 28 days after the third study intervention administration occurring at Day 232, at the local EPI vaccination centers, and not part of the current clinical trial.	Biological: MenACWY; -1 dose of MenACWY vaccine administered intramuscularly at Day 1 to adults in the Adults_Control group; -2 doses of MenACWY vaccine administered intramuscularly at Day 1 and Day 57 to children in the Children_Control B and Children_Control C groups, and at Day 1 and Day 85 to infants in the Infants_9M_Control A, Infants_9M_Control B and Infants_9M_Control C groups; -3 doses of MenACWY vaccine administered intramuscularly at Day 1, Day 57 and at Day 232 to infants in the Infants_6W_Control A, Infants_6W_Control B and Infants_6W_Control C groups. A 4th dose of MenACWY vaccine is administered after the trial ends, to infants in the aforementioned study groups, as per the licensed indication and in private vaccination settings.; Other Names: Menveo; Biological: Measles and Rubella vaccine; Measles and Rubella vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.; Other Names: MR-VAC; Biological: Yellow Fever vaccine; Yellow Fever vaccine is administered to study participants, as part of an Expanded Program on Immunization (EPI) vaccination at the local EPI vaccination centers, and not part of the current clinical trial, as follows: - at 28 days after the first study intervention administration (occurring at Day 1) to infants in the Infants_9M_Dose A, Infants_9M_Control A, Infants_9M_Dose B, Infants_9M_Control B, Infants_9M_Dose C and Infants_9M_Control C groups. - at 28 days after the third study intervention administration (occurring at Day 232) to infants in Infants_6W_Dose A, Infants_6W_Control A, Infants_6W_Dose B, Infants_6W_Control B, Infants_6W_Dose C and Infants_6W_Control C groups.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of adult participants 18-50 years of age with solicited administration site events	The solicited administration site events are pain, redness and swelling.	During 7 days after the first study intervention administration occurring at Day 1
Number of adult participants 18-50 years of age with solicited administration site events	The solicited administration site events are pain, redness and swelling.	During 7 days after the second study intervention administration occurring at Day 57
Number of adult participants 18-50 years of age with solicited systemic events	The solicited systemic events are fever, headache, myalgia, arthralgia and fatigue. Fever is defined as axillary temperature higher than or equal to (>=) 38.0 degrees Celsius (°C)/100.4 degrees Fahrenheit (°F).	During 7 days after the first study intervention administration occurring at Day 1
Number of adult participants 18-50 years of age with solicited systemic events	The solicited systemic events are fever, headache, myalgia, arthralgia and fatigue. Fever is defined as axillary temperature >= 38.0 °C/100.4 degrees °F.	During 7 days after the second study intervention administration occurring at Day 57
Number of adult participants 18-50 years of age with unsolicited adverse events (AEs)	An unsolicited AE is any AE reported in addition to those solicited during the clinical study. Also, any 'solicited' symptom with onset outside the specified period of follow-up for solicited symptoms will be reported as an unsolicited adverse event.	During 28 days after the first study intervention administration occurring at Day 1
Number of adult participants 18-50 years of age with unsolicited adverse events (AEs)	An unsolicited AE is any AE reported in addition to those solicited during the clinical study. Also, any 'solicited' symptom with onset outside the specified period of follow-up for solicited symptoms will be reported as an unsolicited adverse event.	During 28 days after the second study intervention administration occurring at Day 57
Number of adult participants 18-50 years of age with serious adverse events (SAEs)	An SAE is any untoward medical occurrence that results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect in the offspring of a study participant, or results in abnormal pregnancy outcomes.	From first study intervention administration (Day 1) up to the end of study participation (Day 85)
Number of adult participants 18-50 years of age with adverse events (AEs) leading to withdrawal from the study or discontinuation of study intervention	An AE is any untoward medical occurrence (an unfavorable/unintended sign - including an abnormal laboratory finding), symptom, or disease (new or exacerbated) in a clinical study participant that is temporally associated with the study intervention. The AE may or may not be considered related to the study intervention. Any AEs that lead to discontinuation of study intervention and/or the study are considered under this outcome measure.	From first study intervention administration (Day 1) up to the end of study participation (Day 85)
Number of adult participants 18-50 years of age with deviations from reference ranges or baseline values for hematological, renal and hepatic panel test results	Clinically significant abnormal laboratory findings are those which are not associated with an underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition.	At Day 8 (7 days after the first study intervention administration)
Number of adult participants 18-50 years of age with deviations from reference ranges or baseline values for hematological, renal and hepatic panel test results	Clinically significant abnormal laboratory findings are those which are not associated with an underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition.	At Day 64 (7 days after the second study intervention administration)
Number of child participants 24-59 months of age with solicited administration site events	The solicited administration site events are pain, redness and swelling.	During 7 days after the first study intervention administration occurring at Day 1
Number of child participants 24-59 months of age with solicited administration site events	The solicited administration site events are pain, redness and swelling.	During 7 days after the second study intervention administration occurring at Day 57
Number of child participants 24-59 months of age with solicited systemic events	The solicited systemic events are fever, irritability/fussiness, loss of appetite, drowsiness and vomiting. Fever is defined as axillary temperature >= 38.0 °C/100.4 degrees °F.	During 7 days after the first study intervention administration occurring at Day 1
Number of child participants 24-59 months of age with solicited systemic events	The solicited systemic events are fever, irritability/fussiness, loss of appetite, drowsiness and vomiting. Fever is defined as axillary temperature >= 38.0 °C/100.4 degrees °F.	During 7 days after the second study intervention administration occurring at Day 57
Number of child participants 24-59 months of age with unsolicited AEs		During 28 days after the first study intervention administration occurring at Day 1
Number of child participants 24-59 months of age with unsolicited AEs		During 28 days after the second study intervention administration occurring at Day 57
Number of child participants 24-59 months of age with serious adverse events (SAEs)		From first study intervention administration (Day 1) up to the end of study participation (Day 85)
Number of child participants 24-59 months of age with AEs leading to withdrawal from the study or discontinuation of study intervention		From first study intervention administration (Day 1) up to the end of study participation (Day 85)
Number of child participants 24-59 months of age with deviations from reference ranges or baseline values for hematological, renal and hepatic panel test results		At Day 8 (7 days after the first study intervention administration)
Number of child participants 24-59 months of age with deviations from reference ranges or baseline values for hematological, renal and hepatic panel test results		At Day 64 (7 days after the second study intervention administration)
Number of infant participants 9 months of age with solicited administration site events	The solicited administration site events are pain, redness and swelling.	During 7 days after the first study intervention administration occurring at Day 1
Number of infant participants 9 months of age with solicited administration site events	The solicited administration site events are pain, redness and swelling.	During 7 days after the second study intervention administration occurring at Day 85
Number of infant participants 9 months of age with solicited administration site events	The solicited administration site events are pain, redness and swelling.	During 7 days after the third study intervention administration occurring at Day 169
Number of infant participants 9 months of age with solicited systemic events	The solicited systemic events are fever, irritability/fussiness, loss of appetite, drowsiness, and vomiting. Fever is defined as axillary temperature >= 38.0 °C/100.4 degrees °F.	During 7 days after the first study intervention administration occurring at Day 1
Number of infant participants 9 months of age with solicited systemic events	The solicited systemic events are fever, irritability/fussiness, loss of appetite, drowsiness, and vomiting. Fever is defined as axillary temperature >= 38.0 °C/100.4 degrees °F.	During 7 days after the second study intervention administration occurring at Day 85
Number of infant participants 9 months of age with solicited systemic events	The solicited systemic events are fever, irritability/fussiness, loss of appetite, drowsiness, and vomiting. Fever is defined as axillary temperature >= 38.0 °C/100.4 degrees °F.	During 7 days after the third study intervention administration occurring at Day 169
Number of infant participants 9 months of age with unsolicited adverse events (AEs)		During 28 days after the first study intervention administration occurring at Day 1
Number of infant participants 9 months of age with unsolicited adverse events (AEs)		During 28 days after the second study intervention administration occurring at Day 85
Number of infant participants 9 months of age with unsolicited adverse events (AEs)		During 28 days after the third study intervention administration occurring at Day 169
Number of infant participants 9 months of age with serious adverse events (SAEs)		From first study intervention administration (Day 1) up to the end of study participation (Day 337)
Number of infant participants 9 months of age with adverse events (AEs) leading to withdrawal from the study or discontinuation of study intervention		From first study intervention administration (Day 1) up to the end of study participation (Day 337)
Number of infant participants 9 months of age with deviations from reference range or baseline values for hematological, renal and hepatic panel test results		At Day 8 (7 days after the first study intervention administration)
Number of infant participants 9 months of age with deviations from reference range or baseline values for hematological, renal and hepatic panel test results		At Day 92 (7 days after the second study intervention administration)
Number of infant participants 9 months of age with deviations from reference range or baseline values for hematological, renal and hepatic panel test results		At Day 176 (7 days after the third study intervention administration)
Number of infant participants 6 weeks of age with solicited administration site events	The solicited administration site events are pain, redness and swelling.	During 7 days after the first study intervention administration occurring at Day 1
Number of infant participants 6 weeks of age with solicited administration site events	The solicited administration site events are pain, redness and swelling.	During 7 days after the second study intervention administration occurring at Day 57
Number of infant participants 6 weeks of age with solicited systemic events	The solicited systemic events are fever, irritability/fussiness, loss of appetite, drowsiness, and vomiting. Fever is defined as axillary temperature >= 38.0 °C/100.4 degrees °F.	During 7 days after the first study intervention administration occurring at Day 1
Number of infant participants 6 weeks of age with solicited systemic events	The solicited systemic events are fever, irritability/fussiness, loss of appetite, drowsiness, and vomiting. Fever is defined as axillary temperature >= 38.0 °C/100.4 degrees °F.	During 7 days after the second study intervention administration occurring at Day 57
Number of infant participants 6 weeks of age with unsolicited adverse events (AEs)		During 28 days after the first study intervention administration occurring at Day 1
Number of infant participants 6 weeks of age with unsolicited adverse events (AEs)		During 28 days after the second study intervention administration occurring at Day 57
Number of infant participants 6 weeks of age with SAEs		From first study intervention administration (Day 1) up to 28 days after second study intervention (Day 85)
Number of infant participants 6 weeks of age with adverse events (AEs) leading to MR-VAC administration withdrawal from the study or discontinuation of study intervention		From first study intervention administration (Day 1) up to 28 days after second study intervention (Day 85)
Number of infant participants 6 weeks of age with deviations from reference ranges or baseline values for hematological, renal, and hepatic panel test results		At Day 8 (7 days after the first study intervention administration)
Number of infant participants 6 weeks of age with deviations from reference ranges or baseline values for hematological, renal, and hepatic panel test results at Day 64		At Day 64 (7 days after the second study intervention administration)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Anti-invasive nontyphoidal Salmonella (iNTS) serotype specific immunoglobulin G (IgG) geometric mean concentrations (GMCs) in adult participants 18-50 years of age	Anti-S. Typhimurium OAg total IgG and anti-S. Enteritidis OAg total IgG GMCs are assessed.	At Days 1 and 57 (before each study intervention administration) and at Days 29 and 85 (28 days after each study intervention administration)
Anti-invasive nontyphoidal Salmonella (iNTS) serotype specific immunoglobulin G (IgG) geometric mean concentrations (GMCs) in child participants 24-59 months of age	Anti-S. Typhimurium OAg total IgG and anti-S. Enteritidis OAg total IgG GMCs are assessed.	At Days 1 and 57 (before each study intervention administration) and at Days 29 and 85 (28 days after each study intervention administration)
Anti-invasive nontyphoidal Salmonella (iNTS) serotype specific immunoglobulin G (IgG) geometric mean concentrations (GMCs) in infant participants 9 months of age	Anti-S. Typhimurium OAg total IgG and anti-S. Enteritidis OAg total IgG GMCs are assessed.	At Days 1, 85 and 169 (before each study intervention administration) and at Days 29, 113 and 197 (28 days after each study intervention administration)
Anti-invasive nontyphoidal Salmonella (iNTS) serotype specific immunoglobulin G (IgG) geometric mean concentrations (GMCs) in infant participants 6 weeks of age	Anti-S. Typhimurium OAg total IgG and anti-S. Enteritidis OAg total IgG GMCs are assessed.	At Days 1, 57 and 232 (before each study intervention administration) at Days 29, 85 and 260 (28 days after each study intervention administration) and at Day 239 (7 days after the third study intervention administration)
Number of infant participants 6 weeks of age with solicited administration site events	The solicited administration site events are pain, redness and swelling.	During 7 days after the third study intervention administration occurring at Day 232
Number of infant participants 6 weeks of age with solicited systemic events	The solicited systemic events are fever, irritability/fussiness, loss of appetite, drowsiness, and vomiting. Fever is defined as axillary temperature >= 38.0 °C/100.4 degrees °F.	During 7 days after the third study intervention administration occurring at Day 232
Number of infant participants 6 weeks of age with unsolicited AEs		During 28 days after the third study intervention administration occurring at Day 232
Number of infant participants 6 weeks of age with SAEs		From 28 days after the second study intervention administration (Day 85) up to end of study participation (Day 400)
Number of infant participants 6 weeks of age with adverse events (AEs) leading to withdrawal from the study or withholding further study intervention administration		From 28 days after the second study intervention administration (Day 85) up to end of study participation (Day 400)
Number of infant participants 6 weeks of age with deviations from reference ranges or baseline values for hematological, renal, and hepatic panel test results		At Day 239 (7 days after the study intervention administration)
Number of adult participants 18-50 years of age achieving, for each antigen (Ag), at least a 2-fold and 4-fold rise in anti-invasive nontyphoidal Salmonella (iNTS) serotype specific immunoglobulin G (IgG) antibody concentration	Anti-S. Typhimurium OAg total IgG and anti-S. Enteritidis OAg total IgG antibody concentrations are assessed.	At Days 29 and 85 (28 days after each study intervention administration) compared to Day 1 (baseline, prior to first study intervention administration)
Number of child participants 24-59 months of age achieving, for each antigen (Ag), at least a 2-fold and 4-fold rise in anti-invasive nontyphoidal Salmonella (iNTS) serotype specific immunoglobulin G (IgG) antibody concentration	Anti-S. Typhimurium OAg total IgG and anti-S. Enteritidis OAg total IgG antibody concentrations are assessed.	At Days 29 and 85 (28 days after each study intervention administration) compared to Day 1 (baseline, prior to first study intervention administration)
Number of infant participants 9 months of age achieving, for each antigen (Ag), at least a 2-fold and 4-fold rise in anti-invasive nontyphoidal Salmonella (iNTS) serotype specific immunoglobulin G (IgG) antibody concentration	Anti-S. Typhimurium OAg total IgG and anti-S. Enteritidis OAg total IgG antibody concentrations are assessed.	At Days 29, 113 and 197 (28 days after each study intervention administration) compared to Day 1 (baseline, prior to first study intervention administration)
Number of infant participants 6 weeks of age achieving, for each antigen (Ag), at least a 2-fold and 4-fold rise in anti-invasive nontyphoidal Salmonella (iNTS) serotype specific immunoglobulin G (IgG) antibody concentration	Anti-S. Typhimurium OAg total IgG and anti-S. Enteritidis OAg total IgG antibody concentrations are assessed.	At Days 29, 85 and 260 (28 days after each study intervention administration) and at Day 239 (7 days after the third study intervention administration) compared to Day 1 (baseline, prior to first study intervention administration)

Collaborators and Investigators

• Sponsor: GlaxoSmithKline
• Collaborators: Kwame Nkrumah University of Science and Technology; European & Developing Countries Clinical Trials Partnership; Pedvac iNTS consortium
• Investigators: Study Director: GSK Clinical Trials, GlaxoSmithKline

Study record dates

Study Major Dates

• Study Start (Actual): January 15, 2024
• Primary Completion (Estimated): September 30, 2026
• Study Completion (Estimated): September 30, 2026

Study Registration Dates

• First Submitted: December 19, 2023
• First Submitted That Met QC Criteria: January 18, 2024
• First Posted (Actual): January 19, 2024

Study Record Updates

• Last Update Posted (Actual): May 19, 2026
• Last Update Submitted That Met QC Criteria: May 15, 2026
• Last Verified: May 1, 2026

More Information

Terms related to this study

• Keywords: Safety; Immunogenicity; Reactogenicity; sub-Saharan Africa; children and infants; GVGH iNTS-GMMA vaccine; Age de-escalation; Invasive nontyphoidal Salmonella; African adults
• Additional Relevant MeSH Terms: Infections; Bacterial Infections; Bacterial Infections and Mycoses; Gram-Negative Bacterial Infections; Enterobacteriaceae Infections; Salmonella Infections; Biological Products; Complex Mixtures; Bacterial Vaccines; Vaccines; Viral Vaccines; Meningococcal Vaccines; MenACWY; diphtheria-tetanus-acellular pertussis-inactivated poliovirus-Haemophilus influenzae b conjugate-hepatitis B vaccine; Yellow Fever Vaccine; Rubella Vaccine
• Other Study ID Numbers: 217218

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: Study Sponsor will assess requests from qualified researchers for anonymized individual patient-level data and related study documents. Data sharing is subject to certain criteria, conditions, and exceptions. For further information, refer to https://www.gsk-studyregister.com/About_GSK_Patient_Level_Data_Sharing_Final_13July2023.pdf
• IPD Sharing Time Frame: Anonymized IPD will be made available within 6 months of publication of primary, key secondary and safety results for studies in product with approved indication(s) or asset(s) with development terminated across all indications.
• IPD Sharing Access Criteria: Anonymized IPD is shared with researchers whose proposals are approved by an Independent Review Panel and after a Data Sharing Agreement is in place. Access is provided for an initial period of 12 months, but an extension may be granted, when justified, for up to 6 months.
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL; SAP; ICF; CSR

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No