The main purpose of this study is to evaluate immune persistence at 30 and 36 Months of Age and Pertussis Breakthrough Infections between 19 and 36 Months of Age following two regiments of DTaP-IPV/Hib Pentavalent Vaccine in Healthy 2-Month-Old Infants and Children in China.
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Parallel
Different immunization regiments with DTaP-IPV/Hib Pentavalent Vaccine
Procedure/SurgeryThe test vaccine in this study was Pentaxim®, a pentavalent vaccine produced by Sanofi Pasteur, France.This vaccine is a combination vaccine consisting of adsorbed acellular DTP and inactivated polio vaccine (DTaP-IPV) and Haemophilus influenzae type b conjugate vaccine (Hib). 1. Intervention group: 1 dose of experimental vaccine at 2, 4 and 6 months of age, and 1 dose of enhanced vaccine at 18 months of age. 2. Control group: 1 dose of experimental vaccine at 2, 3 and 4 months of age, and 1 dose of enhanced vaccine at 18 months of age.
Anti-pertussis toxin, anti-pertussis filamentous hemagglutinin, anti-pertussis adhesin, anti-pertussis FIM2, anti-pertussis FIM3 .Anti-diphtheria, anti-tetanus, anti-HIB PRP and anti-type 1, 2 and 3 poliomyelitis antibody levels .
Measure antibody levels
Anti-pertussis toxin, anti-pertussis filamentous hemagglutinin, anti-pertussis adhesin, anti-pertussis FIM2, anti-pertussis FIM3 .Anti-diphtheria, anti-tetanus, anti-HIB PRP and anti-type 1, 2 and 3 poliomyelitis antibody levels .
Measure antibody levels
The positive rate of anti-pertussis toxin, anti-pertussis filamentous hemagglutinin , anti-pertussis adherin, anti-pertussis FIM2, anti-pertussis FIM3 ,anti-diphtheria , anti-tetanus , anti-HIB PRP and anti-type 1, 2, 3 poliomyelitis antibody
Measure positive rate of antibody and the growth multiple of GMC
The positive rate of anti-pertussis toxin, anti-pertussis filamentous hemagglutinin , anti-pertussis adherin, anti-pertussis FIM2, anti-pertussis FIM3 ,anti-diphtheria , anti-tetanus , anti-HIB PRP and anti-type 1, 2, 3 poliomyelitis antibody
Measure positive rate of antibody and the growth multiple of GMC
To evaluate the pathogen detection rates of ARI in 2-month-old healthy infants in China after different DTaP-IPV/Hib vaccination programs during 19-36 months of age.
The pathogen detection rate was calculated.
To evaluate the pertussis breakthrough infection rate in healthy infants and young children aged 19 to 36 months after receiving DTaP-IPV/Hib vaccine.
To evaluate the pertussis breakthrough infection rate.
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