
Antibody persistence at 18-20Â months of age and safety and immunogenicity of a booster dose of a combined DTaP-IPV//PRPâ¼T vaccine compared to separate vaccines (DTaP, PRPâ¼T and IPV) following primary vaccination of healthy infants in the People's Rep
Keywords: اطفال; Pentavalent vaccine; Booster; China; Pediatric; Immunogenicity; Safety;