Immunogenicity and Safety of A Group A, C Polysaccharide Meningococcal and Type b Haemophilus Influenzal Conjugate Vaccine in Infants and Children

A Phase III Clinical Trial the Immunogenicity and Safety Study of A Group A, C Polysaccharide Meningococcal and Type b Haemophilus Influenzal Conjugate Vaccine in Infants and Children.

Haemophilus influenzae is an important pathogen which can cause primary infection and respiratory viral infection in infants and leaded to secondary infections. The infection of haemophilus is a major cause of morbidity and mortality in infants and children. At present, the developed conjugant Hib vaccine is proved to be safe and effective. Because Hib vaccine can prevent meningitis, pneumonia, epiglottis inflammation and other serious infection caused by Hib bacteria, the WHO suggested that Hib vaccine should be included in the infant's normal immune programming.

Since the use of meningitis aureus polysaccharide vaccine, incidence of a disease in recent years is declined and maintain to the level of 0.5 per 1/100 thousand. But meningitis aureus polysaccharide vaccine with a relatively poor immune response in the infants under the age of two, and the remaining 60% with a low antibody level and a short duration.

According to the present immunization schedule, to reach the median level of antibody levels there are at least 4 doses in need. So it is meaningful to improving vaccine immunogenicity, to provide high levels of long-term protection and to reduce the number of injections.

After the phase I study which was conducted in August, 2011, the safety profile of this vaccine is proved to be acceptable. The phase III study is aimed to further evaluate the safety and the immunization of the vaccine. The objective of this study is to evaluate the safety of the group A, C polysaccharide meningococcal and type b haemophilus influenzal conjugate vaccine.

Study Overview

• Status: Completed
• Conditions: Group A, C Polysaccharide Meningitis; Type b Haemophilus Influenza
• Intervention / Treatment: Biological: A+C+hib Conjugate Vaccine; Biological: Placebo; Biological: A+C Vaccine; Biological: Hib vaccine

• Study Type: Interventional
• Enrollment (Actual): 2394
• Phase: Phase 3

Contacts and Locations

Study Locations

• China
  • Jiangsu
    • Funing county, Jiangsu, China, 224400
      • Funing County Center for Disease Control and Prevention

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 6 months to 5 years (Child)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

For the children (aged from 2 to 5 years old)

Inclusion Criteria:

• Healthy subjects aged from 2 to 5 years old of normal intelligence.
• The subjects' guardians are able to understand and sign the informed consent.
• Subjects established as healthy after medical history questioning, physical examination and clinical decision and in accordance with vaccination requirements of the investigational vaccine.
• Subjects who can comply with the requirements of the clinical trial program according to the researcher's views.
• Subjects who have never received group A, C polysaccharide meningococcal vaccine and type b haemophilus Influenzal vaccine.
• Subjects with temperature <37°C on axillary setting.

Exclusion Criteria:

• Subject who has a medical history of Meningitis;
• Subject that has a medical history of any of the following: allergies, seizures, epilepsy, encephalopathy history and so on;
• Subject who is allergic with tetanus toxoid components;
• Subject suffering from thrombocytopenia or other coagulation disorder may lead to contraindication to intramuscular injection;
• Subject who has a history of allergic reactions;
• Any known immunological dysfunction;
• Had received gamma globulin or immune globulin, in the past two weeks
• Subject suffering from congenital malformations, dysgenopathy or serious chronic disease;
• Any acute infections
• Any condition that in the opinion of the investigator, may interfere with the evaluation of study objectives

For the infants (aged from 6 to 23 months old)

Inclusion Criteria:

• Healthy subjects aged from 6 months to 23 months old of normal intelligence.
• The subjects' guardians are able to understand and sign the informed consent.
• Subjects established as healthy after medical history questioning, physical examination and clinical decision and in accordance with vaccination requirements of the investigational vaccine.
• Subjects who can comply with the requirements of the clinical trial program according to the researcher's views.
• Subjects who have never received group A, C polysaccharide meningococcal vaccine and type b haemophilus Influenzal vaccine.
• Subjects with temperature<37°C on axillary setting.

Exclusion Criteria for the first vaccination:

• Subject who has a medical history of Meningitis;
• Subject that has a medical history of any of the following: allergies, seizures, epilepsy, encephalopathy history and so on;
• Subject who is allergic with tetanus toxoid components;
• Subject suffering from thrombocytopenia or other coagulation disorder may lead to contraindication to intramuscular injection;
• Subject who has a history of allergic reactions;
• Any known immunological dysfunction;
• Had received gamma globulin or immune globulin, in the past two weeks
• Subject suffering from congenital malformations, dysgenopathy or serious chronic disease;
• Any acute infections
• Any condition that in the opinion of the investigator, may interfere with the evaluation of study objectives

Exclusion Criteria for the second vaccination:

• Had any Grade 3 or Grade 4 adverse reactions or events occurred since the first vaccination
• Any situation meets the exclusion criteria stated in the exclusion criteria for first dose;
• Any condition the investigator believed may affect the evaluation of the vaccine.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Prevention
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Triple

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: children group A; 600 children aged 2-5 years old, will be vaccinated on day0	Biological: A+C+hib Conjugate Vaccine; The group A, C polysaccharide meningococcal and type b haemophilus influenzal conjugate vaccine (Wuxi Royal Biological Co., LTD, 20110101) will be administered intramuscularly on one arm, per 0.5ml dose; Biological: Placebo; Placebo will be administered intramuscularly on the other arm, per 0.5ml dose
Experimental: infants group A; 600 infants aged 6-23 months old, will be vaccinated on day0, 28	Biological: A+C+hib Conjugate Vaccine; The group A, C polysaccharide meningococcal and type b haemophilus influenzal conjugate vaccine (Wuxi Royal Biological Co., LTD, 20110101) will be administered intramuscularly on one arm, per 0.5ml dose; Biological: Placebo; Placebo will be administered intramuscularly on the other arm, per 0.5ml dose
Active Comparator: children group B; 600 children aged 2-5 years old, will be vaccinated on day0	Biological: A+C Vaccine; The group A, C polysaccharide meningococcal vaccine (Wuxi Royal Biological Co., LTD, 20101202) will be administered intramuscularly on one arm, per 0.5ml dose; Biological: Hib vaccine; The type b haemophilus influenzal vaccine (Sanofi Pasteur Limited) will be administered intramuscularly on the other arm, per 0.5ml dose
Active Comparator: infants group B; 600 infants aged 6-23 months old, will be vaccinated on day0, 28	Biological: A+C Vaccine; The group A, C polysaccharide meningococcal vaccine (Wuxi Royal Biological Co., LTD, 20101202) will be administered intramuscularly on one arm, per 0.5ml dose; Biological: Hib vaccine; The type b haemophilus influenzal vaccine (Sanofi Pasteur Limited) will be administered intramuscularly on the other arm, per 0.5ml dose

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The seroconversion rate of antibody against group A, C polysaccharide meningitis in children after vaccination	to evaluate the seroconversion rate of antibody against group A, C polysaccharide meningitis in children when measured 4 weeks (28±3 days) after the vaccination	4 weeks (28±3 days) after the vaccination
The seroconversion rate of antibody against group A, C polysaccharide meningitis in infants after infant series	to evaluate the seroconversion rate of antibody against group A, C polysaccharide meningitis in infants when measured 4 weeks (28±3 days) after the infant series (two times, 28 day apart).	4 weeks (28±3 days) after the infant series (two times, 28 day apart)
The seroconversion rate of antibody against type b haemophilus influenza in children after the vaccination	to evaluate the seroconversion rate of antibody against type b haemophilus Influenza in children when measured 4 weeks (28±3 days) after the vaccination	4 weeks (28±3 days) after the vaccination
The seroconversion rate of antibody against type b haemophilus influenza in infants after infant series	to evaluate the seroconversion rate of antibody against type b haemophilus Influenza in infants when measured 4 weeks (28±3 days) after the infant series (two times, 28 day apart)	4 weeks (28±3 days) after the infant series (two times, 28 day apart)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Injection-site reactions and systemic events after the vaccination in children	to evaluate the injection-site reactions and systemic events of the investigational vaccines in healthy children for 7 days after the vaccination	7 days after the vaccination
Injection-site reactions and systemic events after the first vaccination in infants	to evaluate the injection-site reactions and systemic events of the investigational vaccines in healthy infants for 7 days after the first vaccination	7 days after the first vaccination
Injection-site reactions and systemic events after the second vaccination in infants	to evaluate the injection-site reactions and systemic events of the investigational vaccines in healthy infants for 7 days after the second vaccination	7 days after the second vaccination
GMT of antibody against group A, C polysaccharide meningitis in children after the vaccination	to evaluate the GMT of antibody against group A, C polysaccharide meningitis in children 4 weeks (28±3 days) after the vaccination	4 weeks (28±3 days) after the vaccination
GMT of antibody against group A, C polysaccharide meningitis in infants after the infant series	to evaluate the GMT of antibody against group A, C polysaccharide meningitis in infants 4 weeks (28±3 days) after the infant series (two times, 28 day apart)	4 weeks (28±3 days) after the infant series (two times, 28 day apart)
GMT of antibody against type b haemophilus Influenza in serum in children after the vaccination	to evaluate the GMT of antibody against type b haemophilus Influenza in children 4 weeks (28±3 days) after the vaccination	4 weeks (28±3 days) after the vaccination

Collaborators and Investigators

• Sponsor: Jiangsu Province Centers for Disease Control and Prevention
• Collaborators: Royal (Wuxi) Biological Co., LTD

Study record dates

Study Major Dates

• Study Start: September 1, 2011
• Primary Completion (Actual): December 1, 2011
• Study Completion (Actual): January 1, 2012

Study Registration Dates

• First Submitted: September 2, 2011
• First Submitted That Met QC Criteria: September 2, 2011
• First Posted (Estimate): September 5, 2011

Study Record Updates

• Last Update Posted (Estimate): April 19, 2012
• Last Update Submitted That Met QC Criteria: April 17, 2012
• Last Verified: April 1, 2012

More Information

Terms related to this study

• Keywords: safety; immunogenicity; group A, C polysaccharide meningitis; type b haemophilus Influenza; conjugate vaccine
• Additional Relevant MeSH Terms: Central Nervous System Diseases; Nervous System Diseases; Infections; Gram-Negative Bacterial Infections; Bacterial Infections; Bacterial Infections and Mycoses; Pasteurellaceae Infections; Meningitis; Haemophilus Infections; Physiological Effects of Drugs; Immunologic Factors; Vaccines
• Other Study ID Numbers: JSVCT007