A Study of Three Different Doses of VAC52416 (ExPEC10V) in Adults Aged 60 to 85 Years in Stable Health

June 4, 2026 updated by: Janssen Research & Development, LLC

A Randomized, Observer-blind, First-in-Human Phase 1/2a Study to Evaluate the Safety, Reactogenicity and Immunogenicity of Three Different Doses of VAC52416 (ExPEC10V) in Adults Aged 60 to 85 Years in Stable Health

The purpose of this study is to assess the safety, reactogenicity, and immunogenicity of 3 different doses of ExPEC10V and to select the optimal dose for further clinical development (Cohort 1). Cohort 2 is aimed to expand the dataset supporting the short- and long-term safety and immunogenicity of the optimal dose of ExPEC10V, selected from the primary analysis results of Cohort 1. Cohort 2 will include participants in stable health with a history of urinary tract infection (UTI) in the past 5 years and will be included in the study to support the plan for late stage development of ExPEC vaccine.

Study Overview

Detailed Description

ExPEC10V (JNJ-69968054) is a 10-valent vaccine candidate in development for prevention of invasive extraintestinal pathogenic Escherichia coli (ExPEC) disease (IED) in adults 60 years of age and older. ExPEC10V consists of O-antigen polysaccharides (PSs) of the ExPEC serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B and O75 separately bioconjugate to the carrier protein, a genetically detoxified form of exotoxin A (EPA) derived from Pseudomonas aeruginosa. Since, mechanism of action of conjugate vaccines in prevention of invasive disease is not expected to be affected by antibiotic resistance mechanisms, ExPEC10V vaccine may provide protection against IED caused by drug resistant and susceptible ExPEC serotypes. The study consists of two cohorts. Cohort 1 is comprised of three periods: a screening period (28 days), an observer-blind follow-up period (181 days) with vaccination on Day 1, and an open-label long term follow up (LTFU) period (from Day 182 until 5 years [Day 1826] post-vaccination). Cohort 2 is also comprised of three periods: a screening period (28 days), a double-blind follow-up period (181 days) with vaccination on Day 1, and a double-blind LTFU period (from Day 182 until 1 years [Day 366] post-vaccination). The end of Cohort 1 is considered as the Year 5 visit (Day 1826) for the last participant. The end of Cohort 2 is considered as the Year 1 visit (Day 366) for the last participant. Key immunogenicity assessments will include the assessment of ExPEC10V and ExPEC4V serotype-specific total immunoglobulin G antibody levels elicited by the vaccine and ExPEC10V and ExPEC4V serotype-specific functional antibodies. Key safety assessments include solicited local and systemic AEs, unsolicited AEs, SAEs, physical examinations, vital sign measurements, and, for Cohort 1 only, clinical laboratory tests. The total duration of the study is up to 5 years.

Study Type

Interventional

Enrollment (Actual)

836

Phase

  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Alken, Belgium, 3570
        • Anima
      • Liège, Belgium, 4000
        • ATC Pharma
      • Merksem, Belgium, 2170
        • Clinical Pharmacology Unit
      • Nantes, France, 44093
        • CHU Nantes
      • Paris, France, 75014
        • Hopital Cochin
      • Paris, France, 75018
        • APHP - Hopital Bichat - Claude Bernard
      • Pierre-Bénite, France, 69495
        • CHU Lyon Sud
      • Rennes, France, 35000
        • Chu Rennes Hopital Pontchaillou
      • Tours, France, 37000
        • CHRU Tours Hôpital Bretonneau
      • Almere Stad, Netherlands, 1311 RL
        • EB Flevo Research
      • Groningen, Netherlands, NZ 9728
        • PRA Health Sciences
      • Barcelona, Spain, 08003
        • Hosp. Del Mar
      • Córdoba, Spain, 14004
        • Hosp Reina Sofia
      • Madrid, Spain, 28046
        • Hosp. Univ. La Paz
      • Madrid, Spain, 28006
        • Hosp. Univ. de La Princesa
      • Santander, Spain, 39008
        • Hosp. Univ. Marques de Valdecilla
      • Seville, Spain, 41009
        • Hosp. Virgen Macarena
    • Alabama
      • Huntsville, Alabama, United States, 35802
        • Optimal Research 2
    • Florida
      • Melbourne, Florida, United States, 32934
        • Optimal Research
      • Miami, Florida, United States, 33143
        • Qps-Mra, Llc
    • Illinois
      • Peoria, Illinois, United States, 61614
        • Optimal Research 1
    • Indiana
      • Evansville, Indiana, United States, 47714
        • Synexus Clinical Research US Inc 4
    • Kansas
      • Lenexa, Kansas, United States, 66219
        • Johnson County Clin-Trials
    • Minnesota
      • Richfield, Minnesota, United States, 55432
        • Synexus Clinical Research US Inc 2
    • New York
      • Manhattan, New York, United States, 10017
        • Synexus Clinical Research US Inc 3
      • Rochester, New York, United States, 14609
        • Rochester Clinical Research, Inc
    • Ohio
      • Akron, Ohio, United States, 44311
        • Synexus Clinical Research US Inc 1
      • Columbus, Ohio, United States, 43212
        • Synexus Clinical Research US Inc
    • South Carolina
      • North Charleston, South Carolina, United States, 29405
        • Coastal Carolina Research Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

60 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Must have a body mass index (BMI) of greater than (>) 18.5 or less than 40 kilogram per meter square (kg/m^2)
  • Before randomization, a woman must be: postmenopausal - A postmenopausal state is defined as no menses for 12 months without an alternative medical cause; or not intending to conceive by any methods
  • Must be healthy or medically stable
  • Must sign an informed consent form (ICF) indicating that he or she understands the purpose of, and procedures required for, the study and is willing to participate in the study
  • Willing and able to adhere to the lifestyle restrictions specified in this protocol
  • Agrees not to donate blood until 12 weeks after receiving the study vaccine

Exclusion Criteria:

  • Acute illness (this does not include minor illnesses such as diarrhea or mild upper respiratory tract infection) or temperature greater than equal to >=38.0 degree Celsius (100.4 degree Fahrenheit) within 24 hours prior to the administration of study vaccine, or, applicable for Cohort 2 only, an ongoing or suspected symptomatic urinary tract infection (UTI); enrollment at a later date is permitted (provided the screening window of 28 days is respected)
  • History of malignancy within 5 years before screening (exceptions are squamous and basal cell carcinomas of the skin and carcinoma in situ of the cervix, or malignancy, which is considered cured with minimal risk of recurrence)
  • Known allergies, hypersensitivity, or intolerance to ExPEC10V or its excipients
  • Applicable for Cohort 1 only: known allergy or history of anaphylaxis or other serious adverse reactions to vaccines or vaccine products (including any of the constituents of the active control vaccines)
  • Contraindication to intramuscular (IM) injections and blood draws example, bleeding disorders
  • Abnormal function of the immune system
  • Has had major psychiatric illness and/or drug substance or alcohol abuse in the past 12 months

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Other
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Cohort 1: ExPEC10V (Low Dose)
Participants will be randomized to receive a single intramuscular (IM) injection of low dose ExPEC10V on Day 1.
Participants will receive a single IM injection of ExPEC10V (1 of 3 doses [low or medium or high]) in Cohort 1 and ExPEC10V selected dose (based on the primary analysis results of Cohort 1) in Cohort 2 on Day 1.
Other Names:
  • VAC52416
Experimental: Cohort 1: ExPEC10V (Medium dose)
Participants will be randomized to receive a single IM injection of medium dose ExPEC10V on Day 1.
Participants will receive a single IM injection of ExPEC10V (1 of 3 doses [low or medium or high]) in Cohort 1 and ExPEC10V selected dose (based on the primary analysis results of Cohort 1) in Cohort 2 on Day 1.
Other Names:
  • VAC52416
Experimental: Cohort 1: ExPEC10V (High dose)
Participants will be randomized to receive a single IM injection of high dose ExPEC10V on Day 1.
Participants will receive a single IM injection of ExPEC10V (1 of 3 doses [low or medium or high]) in Cohort 1 and ExPEC10V selected dose (based on the primary analysis results of Cohort 1) in Cohort 2 on Day 1.
Other Names:
  • VAC52416
Experimental: Cohort 1: ExPEC4V
Participants will be randomized to receive a single IM injection of ExPEC4V on Day 1.
Participants will receive a single IM injection of ExPEC4V on Day 1.
Other Names:
  • JNJ-63871860
Experimental: Cohort 1: Prevnar 13
Participants will be randomized to receive a single IM injection of Prevnar 13 on Day 1.
Participants will receive a single IM injection of Prevnar 13 on Day 1.
Experimental: Cohort 2: ExPEC10V
Participants will be randomized to receive a single IM injection of selected dose of ExPEC10V on Day 1. The ExPEC10V dose used in Cohort 2 will be based on the primary analysis (Day 30) results of Cohort 1.
Participants will receive a single IM injection of ExPEC10V (1 of 3 doses [low or medium or high]) in Cohort 1 and ExPEC10V selected dose (based on the primary analysis results of Cohort 1) in Cohort 2 on Day 1.
Other Names:
  • VAC52416
Placebo Comparator: Cohort 2: Placebo
Participants will be randomized to receive a single IM injection of matching placebo on Day 1.
Participants will receive single IM injection of matching placebo on Day 1.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Cohort 1: Number of Participants With Solicited Local (Injection Site) Adverse Events (AEs) for 14 Days After Vaccination on Day 1
Time Frame: Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)
Number of participants with solicited local AEs for 14 days after vaccination on Day 1 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Solicited local AEs were precisely defined events that participants were specifically asked about and which were noted by participants in the diary. Solicited local (injection site) AEs included injection site pain/tenderness, erythema and swelling at the study vaccine injection site, were used to assess the reactogenicity of the study vaccine and were pre-defined local (injection site). All solicited AEs at the injection site (local) were considered related to the study vaccine administration.
Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)
Cohort 1: Number of Participants With Solicited Systemic Adverse Events (AEs) Collected for 14 Days After Vaccination on Day 1
Time Frame: Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)
Number of participants with solicited systemic AEs 14 days after vaccination on Day 1 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Solicited systemic AEs included fatigue, headache, nausea, fever and myalgia, for which participants were specifically questioned and which were noted by participants in their participant diary for 14 days post-vaccination (day of vaccination and the subsequent 14 days).
Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)
Cohort 1: Number of Participants With Unsolicited Adverse Events (AEs) up to 29 Days After Vaccination on Day 1
Time Frame: Up to 29 days post vaccination on Day 1 (from Day 1 up to Day 30)
Number of participants with unsolicited AEs up to 29 days after vaccination on Day 1 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.
Up to 29 days post vaccination on Day 1 (from Day 1 up to Day 30)
Cohort 1: Number of Participants With Serious Adverse Events (SAEs) up to Day 181
Time Frame: Day 1 (post vaccination) up to Day 181
Number of participants with SAEs up to Day 181 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. An SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect; suspected transmission of any infectious agent via a medicinal product or medically important.
Day 1 (post vaccination) up to Day 181
Cohort 2: Number of Participants With Solicited Local (Injection Site) Adverse Events (AEs) Collected for 14 Days After Vaccination on Day 1
Time Frame: Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)
Number of participants with solicited local AEs for 14 days after vaccination on Day 1 were reported. An AE is any untoward medical occurrence in a clinical study participant administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Solicited local AEs were precisely defined events that participants were specifically asked about and which were noted by participants in the diary. Solicited local (injection site) AEs included injection site pain/tenderness, erythema and swelling at the study vaccine injection site, were used to assess the reactogenicity of the study vaccine and were pre-defined local (injection site). All solicited AEs at the injection site (local) were considered related to the study vaccine administration.
Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)
Cohort 2: Number of Participants With Solicited Systemic Adverse Events (AEs) Collected for 14 Days After Vaccination on Day 1
Time Frame: Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)
Number of participants with solicited systemic AEs 14 days after vaccination on Day 1 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Solicited systemic AEs included fatigue, headache, nausea, fever and myalgia, for which participants were specifically questioned and which were noted by participants in their participant diary for 14 days post-vaccination (day of vaccination and the subsequent 14 days).
Up to 14 days post vaccination on Day 1 (from Day 1 up to Day 15)
Cohort 2: Number of Participants With Unsolicited Adverse Events (AEs) 29 Days After Vaccination on Day 1
Time Frame: Up to 29 days post vaccination on Day 1 (from Day 1 up to Day 30)
Number of participants with unsolicited AEs up to 29 days after vaccination on Day 1 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. Unsolicited AEs were all AEs for which the participant is not specifically questioned in the participant diary.
Up to 29 days post vaccination on Day 1 (from Day 1 up to Day 30)
Cohort 2: Number of Participants With Serious Adverse Events (SAEs) up to Day 181
Time Frame: Day 1 (post vaccination) up to Day 181
Number of participants with SAEs up to Day 181 were reported. An AE was any untoward medical occurrence in a clinical study administered a medicinal (investigational or non-investigational) product. An AE does not necessarily have a causal relationship with the study vaccine. An SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect; suspected transmission of any infectious agent via a medicinal product or medically important.
Day 1 (post vaccination) up to Day 181
Cohort 1: Geometric Mean Titers (GMTs) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex Electrochemiluminescent (ECL) Based Immunoassay on Day 15
Time Frame: Day 15
GMTs of serotype-specific total IgG serum antibodies as measured by multiplex ECL based immunoassay were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and exotoxin protein A (EPA) were determined in serum from collected blood samples. Lower limit of quantification (LLOQ) values for O1A: 69149, O2: 65287, O4: 67356, O6A: 150748, O8: 72196, O15: 66910, O16: 71586, O18A: 70519, O25B: 61990, O75: 133019, and EPA: 66165. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
Day 15
Cohort 1: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype Specific Antibodies as Measured by Multiplex ECL Based Immunoassay on Day 15
Time Frame: Baseline (Day 1, pre-vaccination) and Day 15
GMR of fold changes from baseline for serotype specific antibodies as measured by multiplex ECL based immunoassay on Day 15 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA were determined in serum from collected blood samples by multiplex ECL based immunoassay. GMR of fold change from baseline was calculated as the ratio of GMTs on Day 15 and pre-vaccination (on Day 1). Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Day 15
Cohort 1: Percentage of Participants With a Greater Than or Equal to (>=) 2-Fold and >=4-Fold Increase From Baseline in Serotype Specific Serum Antibody Titers as Measured by Multiplex ECL Based Immunoassay on Day 15
Time Frame: Baseline (Day 1, pre-vaccination) and Day 15
Percentage of participants with a >=2-fold and >=4-fold increase (FI) from baseline in serotype specific serum antibody titers as measured by multiplex ECL based immunoassay on Day 15 was reported. The fold (>=2-fold and >=4-fold) increase from baseline to Day 15 for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA was calculated as the ratio of titer values of serum antibody on Day 15 and pre-vaccination (on day 1) that is Day 15/Day 1. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Day 15
Cohort 1: Geometric Mean Titers (GMT) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex Opsonophagocytic Assay (MOPA) on Day 15
Time Frame: Day 15
GMTs of serotype-specific total IgG serum antibodies as measured by MOPA were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B and O75 were determined in serum from collected blood samples. LLOQ values were: O1A: 53, O2: 51, O4: 29, O6A: 47, O8: 196, O15: 37, O16: 54, O18A: 12, O25B: 65, and O75: 37. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
Day 15
Cohort 1: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype Specific Antibodies as Measured by MOPA on Day 15
Time Frame: Baseline (Day 1, pre-vaccination), Day 15
GMR of fold changes from baseline for serotype specific antibodies as measured by MOPA on Day 15 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B and O75 were determined in serum from collected blood samples by MOPA. GMR of fold change from baseline was calculated as the ratio of GMTs on Day 15 and pre-vaccination (on Day 1). Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination), Day 15
Cohort 1: Percentage of Participants With a >= 2-Fold and >=4-Fold Increase in Serotype-specific Serum Antibody Titers Measured by MOPA on Day 15
Time Frame: Baseline (Day 1, pre-vaccination) and Day 15
Percentage of participants with a >=2-fold and >=4-fold increase from baseline in serotype specific serum antibody titers as measured by MOPA on Day 15 was reported. The fold (>=2-fold and >=4-fold) increase from baseline to Day 15 for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, and O75 was calculated as the ratio of titer values of serum antibody on Day 15 and pre-vaccination (on day 1) that is, Day 15/Day 1. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Day 15
Cohort 2: Geometric Mean Titers (GMTs) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex ECL Based Immunoassay on Day 30
Time Frame: At Day 30
GMTs of serotype-specific total IgG serum antibodies as measured by multiplex ECL based immunoassay were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA were determined in serum from collected blood samples. LLOQ values for O1A: 69149, O2: 65287, O4: 67356, O6A: 150748, O8: 72196, O15: 66910, O16: 71586, O18A: 70519, O25B: 61990, O75: 133019, and EPA: 66165. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
At Day 30
Cohort 2: Geometric Mean Ratio (GMR) of Fold Changes From Baseline For Serotype-specific Antibodies Measured by Multiplex ECL Based Immunoassay on Day 30
Time Frame: Baseline (Day 1, pre-vaccination) and Day 30
GMR of fold changes from baseline for serotype-specific antibodies as measured by multiplex ECL based immunoassay on Day 30 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA were determined in serum from collected blood samples by multiplex ECL based immunoassay. GMR of fold change from baseline was calculated as the ratio of GMTs on Day 30 and pre-vaccination (on Day 1). Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Day 30
Cohort 2: Percentage of Participants With a >=2-Fold and >=4-Fold Increase From Baseline in Serotype Specific Serum Antibody Titers as Measured by Multiplex ECL Based Immunoassay on Day 30
Time Frame: Baseline (Day 1, pre-vaccination) and Day 30
Percentage of participants with a >=2-fold and >=4-fold increase from baseline in serotype specific serum antibody titers as measured by multiplex ECL based immunoassay on Day 30 was reported. The fold (>=2-fold and >=4-fold) increase from baseline to Day 30 for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA was calculated as the ratio of titer values of serum antibody on Day 30 and pre-vaccination (on day 1) that is, Day 30/Day 1. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Day 30
Cohort 2: Geometric Mean Titer (GMT) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex Opsonophagocytic Assay (MOPA) on Day 30
Time Frame: At Day 30
GMTs of serotype-specific total IgG serum antibodies as measured by MOPA were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B, and O75 were determined in serum from collected blood samples. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. LLOQ values were O1A: 33, O2: 42, O4: 12, O6A: 62, O15: 75, O16: 17, O18A: 44, O25B: 58, O75: 14. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
At Day 30
Cohort 2: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype Specific Antibodies as Measured by MOPA on Day 30
Time Frame: Baseline (Day 1, pre-vaccination) and Day 30
GMR of fold changes from baseline for serotype specific antibodies as measured by MOPA on Day 30 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75 were determined in serum from collected blood samples by MOPA. GMR of fold change from baseline was calculated as the ratio of GMTs on Day 30 and pre-vaccination (on Day 1). For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Day 30
Cohort 2: Percentage of Participants With a >= 2-Fold and >=4-Fold Increase in Serotype-specific Serum Antibodies Titers Measured by MOPA on Day 30
Time Frame: Baseline (Day 1, pre-vaccination) and Day 30
Percentage of participants with a >=2-fold and >=4-fold increase from baseline in serotype specific serum antibodies titers as measured by MOPA on Day 30 was reported. The fold (>=2-fold and >=4-fold increase from baseline to Day 30 for the serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75 was calculated as the ratio of titer values of serum antibodies on Day 30 and pre-vaccination (on day 1 that is, Day 30/Day 1. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Day 30

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Cohort 2: Number of Participants With Serious Adverse Events (SAEs) Related to Study Vaccine or Study Procedure From Day 182 up to End of Study (Day 1826)
Time Frame: From Day 182 up to end of study (Day 1826)
An AE is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent under study. An SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect; suspected transmission of any infectious agent via a medicinal product or medically important.
From Day 182 up to end of study (Day 1826)
Cohort 1: Correlation Between the Multiplex ECL-Based Immunoassay and the MOPA Functional Titers by Serotypes on Day 15
Time Frame: Day 15
Correlation between the multiplex ECL-based immunoassay and the MOPA functional titers by serotypes (O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B and O75) on Day 15 were analyzed. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
Day 15
Cohort 1: Geometric Mean Titers (GMTs) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex ECL Based Immunoassay on Days 30 and 181
Time Frame: Days 30 and 181
GMTs of serotype-specific total IgG serum antibodies as measured by multiplex ECL based immunoassay on Days 30 and 181 were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA were determined in serum from collected blood samples. LLOQ values for O1A: 69149, O2: 65287, O4: 67356, O6A: 150748, O8: 72196, O15: 66910, O16: 71586, O18A: 70519, O25B: 61990, O75: 133019, and EPA: 66165. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
Days 30 and 181
Cohort 1: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype-specific Antibodies Measured by Multiplex ECL Based Immunoassay on Days 30 and 181
Time Frame: Baseline (Day 1, pre-vaccination) and Days 30 and 181
GMR of fold changes from baseline for serotype specific antibodies measured by multiplex ECL based immunoassay on Days 30 and 181 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA were determined in serum from collected blood samples by ECL based immunoassay. GMR of fold change from baseline was calculated as the ratio of GMTs on Days 30 and 181 and pre-vaccination (on Day 1). Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Days 30 and 181
Cohort 1: Percentage of Participants With a >= 2-Fold and >=4-Fold Increase From Baseline in Serotype-specific Serum Antibody Titers as Measured by Multiplex ECL Based Immunoassay on Days 30 and 181
Time Frame: Day 1 (pre-vaccination) and Days 30 and 181
Percentage of participants with a >=2-fold and >=4-fold increase from baseline in serotype (ST)-specific serum antibody titers as measured by multiplex ECL based immunoassay on Days 30 and 181 was reported. The fold (>=2-fold and >=4-fold) increase from baseline to Days 30 and 181 for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA was calculated as the ratio of titer values of serum antibody on Day 30 and Day 181 and pre-vaccination (on Day 1 that is, Day 30/Day 1 and Day 181/Day 1). Any titer less than LLOQ is replaced by value of LLOQ.
Day 1 (pre-vaccination) and Days 30 and 181
Cohort 1: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype Specific Antibodies as Measured by MOPA on Days 30 and 181
Time Frame: Baseline (Day 1, pre-vaccination) and Days 30 and 181
GMRs for each O-antigen (serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75) were determined using a validated MOPA. For sample pairs with available validated MOPA results from both Day 1 and Day 30, or Day 1 and 181, GMR from baseline for serotype specific antibodies was calculated as the ratio of GMTs on Days 30 or 181 and pre-vaccination (on Day 1). For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Days 30 and 181
Cohort 1: Geometric Mean Titers (GMTs) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by MOPA on Days 30 and 181
Time Frame: Days 30 and 181
GMTs of serotype-specific total IgG serum antibodies as measured by MOPA on Days 30 and 181 were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A,O15, O16, O18A, O25B and O75 were determined in serum from collected blood samples. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. LLOQ values were O1A: 33, O2: 42, O4: 12, O6A: 62, O15: 75, O16: 17, O18A: 44, O25B: 58, O75: 14. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
Days 30 and 181
Cohort 1: Percentage of Participants With a >= 2-Fold and >=4-Fold Increase in Serotype-specific Serum Antibody Titers Measured by MOPA on Days 30 and 181
Time Frame: Day 1 (pre-vaccination) and Days 30 and 181
For sample pairs with available validated MOPA results, for each O-antigen (serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75), the fold increase was calculated as the ratio of validated MOPA results on Days 30 or 181 and pre-vaccination (Day 30/Day 1 and 181/Day 1). The percentage of participants with >=2-fold and >=4-fold increase in serotype-specific serum antibody titers was calculated. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.
Day 1 (pre-vaccination) and Days 30 and 181
Cohort 1: Number of Participants With Serious Adverse Events (SAEs) Related to Study Vaccine or Study Procedure From Day 182 up to End of Study (Day 1826)
Time Frame: From Day 182 up to end of study (Day 1826)
Number of participants with SAEs related to study vaccine or study procedure was reported. An AE is any untoward medical occurrence in a participant participating in a clinical study that does not necessarily have a causal relationship with the pharmaceutical/biological agent understudy. An SAE is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect; suspected transmission of any infectious agent via a medicinal product or medically important.
From Day 182 up to end of study (Day 1826)
Cohort 1: Geometric Mean Titers (GMTs) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex ECL Based Immunoassay on Days 366, 731, 1096, 1461 and 1826
Time Frame: Days 366, 731, 1096, 1461 and 1826
GMTs of serotype-specific total IgG serum antibodies as measured by ECL based immunoassay were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA were determined in serum from collected blood samples. LLOQ values for O1A: 69149, O2: 65287, O4: 67356, O6A: 150748, O8: 72196, O15: 66910, O16: 71586, O18A: 70519, O25B: 61990, O75: 133019, and EPA: 66165. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
Days 366, 731, 1096, 1461 and 1826
Cohort 1: Percentage of Participants With a >=2-Fold and >=4-Fold Increase From Baseline in Serotype Specific Serum Antibody Titers as Measured by Multiplex ECL Based Immunoassay on Days 366, 731, 1096, 1461 and 1826
Time Frame: Baseline (Day 1, pre-vaccination) and Days 366, 731, 1096, 1461, 1826
Percentage of participants with a >=2-fold and >=4-fold increase from baseline in serotype specific serum antibody titers as measured by multiplex ECL based immunoassay on Days 366, 731, 1096, 1461, and 1826 was reported. The fold (>=2-fold and >=4-fold) increase from baseline to Days 366, 731, 1096, 1461, and 1826 for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA was calculated as the ratio of titer values of serum antibody on Days 366, 731, 1096, 1461 and 1826 and pre-vaccination (on day 1) that is, Day 366/Day 1, 731/Day 1, 1096/Day 1, 1461/Day 1 and 1826/Day 1. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Days 366, 731, 1096, 1461, 1826
Cohort 1: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype-specific Antibodies Measured by Multiplex ECL Based Immunoassay on Days 366, 731, 1096, 1461 and 1826
Time Frame: Baseline (Day 1, pre-vaccination) and Days 366, 731, 1096, 1461, 1826
GMR of fold changes from baseline for serotype specific antibodies as measured by multiplex ECL based immunoassay on Days 366, 731, 1096, 1461 and 1826 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA were determined in serum from collected blood samples by ECL based immunoassay. GMR of fold change from baseline was calculated as the ratio of GMTs on Days 366, 731, 1096, 1461 and 1826 and pre-vaccination (on Day 1). Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Days 366, 731, 1096, 1461, 1826
Cohort 1: Geometric Mean Titer (GMT) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by MOPA on Days 366, 731, 1096, and 1461
Time Frame: Days 366, 731, 1096, 1461
GMTs of serotype-specific total IgG serum antibodies as measured by MOPA were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75 were determined in serum from collected blood samples. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Data was planned to be analyzed for specified arms only. LLOQ values for O1A: 33, O2: 42, O4: 12, O6A: 62, O15: 75, O16: 17, O18A: 44, O25B: 58, O75: 14. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
Days 366, 731, 1096, 1461
Cohort 1: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype Specific Antibodies as Measured by MOPA on Days 366, 731, 1096, and 1461
Time Frame: Baseline (Day 1, pre-vaccination) and Days 366, 731, 1096, 1461
GMR of fold changes from baseline for serotype specific antibodies as measured by MOPA on Days 366, 731, 1096, 1461 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75 were determined in serum from collected blood samples by MOPA. GMR of fold change from baseline was calculated as the ratio of GMTs on Days 366, 731, 1096, 1461 and pre-vaccination (on Day 1). For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Days 366, 731, 1096, 1461
Cohort 1: Percentage of Participants With a >= 2-Fold and >=4-Fold Increase in Serotype-specific Serum Antibody Titers Measured by MOPA on Days 366, 731, 1096, and 1461
Time Frame: Baseline (Day 1, pre-vaccination) and Days 366, 731, 1096, and 1461
The fold (>=2-fold and >=4-fold) increase from baseline to Days 366, 731, 1096, and 1461 for the serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B, and O75 was calculated as the ratio of titer values of serum antibody on Days 366, 731, 1096, 1461 and pre-vaccination (on day 1) that is, Day 366/Day 1, 731/Day 1, 1096/Day 1, 1461/Day 1. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Days 366, 731, 1096, and 1461
Cohort 2: Correlation Between the Multiplex ECL-Based Immunoassay and the MOPA Functional Titers by Serotype on Day 30
Time Frame: Day 30
Correlation between the multiplex ECL-based immunoassay and the MOPA functional titers by serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B, and O75 on Day 30 was analyzed. Data was planned to be analyzed for specified arms only. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype.
Day 30
Cohort 2: Geometric Mean Titers (GMTs) of Serotype-specific Total Immunoglobulin G (IgG) Serum Antibodies as Measured by Multiplex ECL Based Immunoassay on Days 15 and 181
Time Frame: At Days 15 and 181
GMTs of serotype-specific total IgG serum antibodies as measured by ECL based immunoassay were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 and EPA were determined in serum from collected blood samples. Data was planned to be analyzed for specified arms only. LLOQ values for O1A: 69149, O2: 65287, O4: 67356, O6A: 150748, O8: 72196, O15: 66910, O16: 71586, O18A: 70519, O25B: 61990, O75: 133019, and EPA: 66165. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
At Days 15 and 181
Cohort 2: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype-specific Antibodies Measured by Multiplex ECL Based Immunoassay on Days 15 and 181
Time Frame: Baseline (Day 1, pre-vaccination), Days 15 and 181
GMR of fold changes from baseline for serotype specific antibodies as measured by multiplex ECL based immunoassay on Days 15 and 181 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, and O75 were determined in serum from collected blood samples by ECL based immunoassay. GMR of fold change from baseline was calculated as the ratio of GMTs on Days 15 and 181 and pre-vaccination (on Day 1). Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination), Days 15 and 181
Cohort 2: Percentage of Participants With a >= 2-Fold Increase in Serotype-specific Serum Antibody Titers Measured by Multiplex ECL Based Immunoassay on Days 15 and 181
Time Frame: Baseline (Day 1, pre-vaccination), Days 15 and 181
Percentage of participants with a >=2-fold increase from baseline in serotype specific serum antibody titers as measured by multiplex ECL based immunoassay on Days 15 and 181 were reported. The fold (>=2-fold increase from baseline to Days 15 and 181) for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, and O75 was calculated as the ratio of titer values of serum antibody on Days 15 and 181 and pre-vaccination (on Day 1 that is Day 15/Day 1 and Day 181/Day 1).
Baseline (Day 1, pre-vaccination), Days 15 and 181
Cohort 2: Percentage of Participants With a >= 4-Fold Increase in Serotype-specific Serum Antibody Titers Measured by Multiplex ECL Based Immunoassay on Days 15 and 181
Time Frame: Baseline (Day 1, pre-vaccination), Days 15 and 181
Percentage of participants with a >=4-fold increase from baseline in serotype specific serum antibody titers as measured by multiplex ECL based immunoassay on Days 15 and 181 were reported. The fold (>=4-fold increase from baseline to Days 15 and 181) for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, and O75 was calculated as the ratio of titer values of serum antibody on Days 15 and 181 and pre-vaccination (on Day 1 that is Day 15/Day 1 and Day 181/Day 1).
Baseline (Day 1, pre-vaccination), Days 15 and 181
Cohort 2: Geometric Mean Titers (GMTs) of Serotype-specific Total IgG Serum Antibodies Against Specified Antigens Measured by MOPA on Day 181
Time Frame: At Day 181
GMTs of serotype-specific total IgG serum antibodies as measured by MOPA were reported. Serotypes: O1A, O2, O4, O6A, O15, O16, O18A, O25B, and O75 were determined in serum from collected blood samples. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. LLOQ values for O1A: 33, O2: 42, O4: 12, O6A: 62, O15: 75, O16: 17, O18A: 44, O25B: 58, O75: 14. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
At Day 181
Cohort 2: Percentage of Participants With a >= 2-Fold and >=4-Fold Increase in Serotype-specific Serum Antibody Titers Measured by MOPA on Day 181
Time Frame: Baseline (Day 1, pre-vaccination) and Day 181
Percentage of participants with a >=2-fold and >=4-fold increase from baseline in serotype specific serum antibody titers as measured by MOPA on Day 181 was reported. The fold (>=2-fold and >=4-fold) increase from baseline to Day 181 for the serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75 was calculated as the ratio of titer values of serum antibody on Day 181 and pre-vaccination (on Day 1) that is, Day 181/Day 1. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination) and Day 181
Cohort 2: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype-specific Antibodies Measured by MOPA on Day 181
Time Frame: Baseline (Day 1, pre-vaccination), Day 181
GMR of fold changes from baseline for serotype specific antibodies as measured by MOPA on Day 181 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75 were determined in serum from collected blood samples by MOPA. GMR of fold change from baseline was calculated as the ratio of GMTs on Day 181 and pre-vaccination (on Day 1). For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination), Day 181
Cohort 2: Geometric Mean Titers (GMTs) of Serotype-specific Antibodies Against Specified Antigens Measured by Multiplex ECL Based Immunoassay on Day 366
Time Frame: At Day 366
GMTs of serotype-specific antibodies as measured by ECL based immunoassay were reported. GMTs for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 were determined. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
At Day 366
Cohort 2: Percentage of Participants With a >= 2-Fold and >=4-Fold Increase in Serotype-specific Serum Antibody Titers Measured by Multiplex ECL Based Immunoassay on Day 366
Time Frame: Baseline (Day 1, pre-vaccination), Day 366
Percentage of participants with a >=2-fold and >=4-fold increase from baseline in serotype specific serum antibody titers as measured by multiplex ECL based immunoassay on Day 366 was reported. The fold (>=2-fold and >=4- fold) increase from baseline to Day 366 for the serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 was calculated as the ratio of titer values of serum antibodies on Day 366 and pre-vaccination (on day 1) that is, Day 366/ Day 1. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination), Day 366
Cohort 2: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype-specific Antibodies Measured by Multiplex ECL Based Immunoassay on Day 366
Time Frame: Baseline (Day 1, pre-vaccination), Day 366
GMR of fold changes from baseline for serotype specific antibodies as measured by multiplex ECL based immunoassay on Day 366 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O8, O15, O16, O18A, O25B, O75 were determined in serum from collected blood samples by ECL based immunoassay. GMR of fold change from baseline was calculated as the ratio of GMTs on Day 366 and pre-vaccination (on Day 1). Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination), Day 366
Cohort 2: Geometric Mean Titers (GMTs) of Serotype-specific Total IgG Serum Antibodies Against Specified Antigens Measured by MOPA on Day 366
Time Frame: At Day 366
GMTs of serotype-specific total IgG serum antibodies as measured by MOPA were reported. GMTs for each antigen serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B, and O75 were determined in serum from collected blood samples. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. LLOQ values for O1A: 33, O2: 42, O4: 12, O6A: 62, O15: 75, O16: 17, O18A: 44, O25B: 58, O75: 14. Any titer less than LLOQ is replaced by half of LLOQ (0.5*LLOQ).
At Day 366
Cohort 2: Geometric Mean Ratio (GMR) of Fold Changes From Baseline for Serotype-specific Antibodies Measured by MOPA on Day 366
Time Frame: Baseline (Day 1, pre-vaccination), Day 366
GMR of fold changes from baseline for serotype specific antibodies as measured by MOPA on Day 366 were reported. GMR for each antigen serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75 were determined in serum from collected blood samples by MOPA. GMR of fold change from baseline was calculated as the ratio of GMTs on Day 366 and pre-vaccination (on Day 1). For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination), Day 366
Cohort 2: Percentage of Participants With a >= 2-Fold and >=4-Fold Increase in Serotype-specific Serum Antibody Titers Measured by MOPA on Day 366
Time Frame: Baseline (Day 1, pre-vaccination), Day 366
Percentage of participants with a >=2-fold and >=4-fold increase from baseline in serotype specific serum antibody titers as measured by MOPA on Day 366 was reported. The >=2-fold and >=4-fold increase from baseline to Day 366 for the serotypes O1A, O2, O4, O6A, O15, O16, O18A, O25B and O75 was calculated as the ratio of titer values of serum antibody on Day 366 and pre-vaccination (on day 1) that is, Day 366/Day 1. For serotype O8 functional IgG serum antibodies were not evaluated as the assay was not able to detect vaccine-induced functional antibodies against the O8 serotype. Any titer less than LLOQ is replaced by value of LLOQ.
Baseline (Day 1, pre-vaccination), Day 366

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Study Director: Janssen Research & Development, LLC Clinical Trial, Janssen Research & Development, LLC

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

June 6, 2019

Primary Completion (Actual)

June 8, 2021

Study Completion (Actual)

December 18, 2024

Study Registration Dates

First Submitted

January 25, 2019

First Submitted That Met QC Criteria

January 25, 2019

First Posted (Actual)

January 28, 2019

Study Record Updates

Last Update Posted (Actual)

June 5, 2026

Last Update Submitted That Met QC Criteria

June 4, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

  • CR108580
  • VAC52416BAC1001 (Other Identifier: Janssen Research & Development, LLC)
  • 2020-000657-27 (EudraCT Number)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

The data sharing policy of the Janssen Pharmaceutical Companies of Johnson & Johnson is available at www.janssen.com/clinical-trials\transparency.

As noted on this site, requests for access to the study data can be submitted through Yale open Data Access (YODA) Project site at yoda.yale.edu

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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