Safety and immunogenicity of Haemophilus influenzae type B-Neisseria meningitidis group B outer membrane protein complex conjugate vaccine mixed in the syringe with diphtheria-tetanus-pertussis vaccine in young Gambian infants.

Abstract

To ensure compliance and to reduce costs it is important, especially in less developed countries, that programs of child immunization should require as few clinic attendances and as few injections as possible. Therefore we have investigated whether a Haemophilus influenzae type b conjugate vaccine could be given safely and effectively with diphtheria-tetanus-pertussis vaccine (DTP). One hundred twenty-six Gambian infants were given both polyribosylribitol phosphate (PRP)-outer membrane protein complex (PedvaxHIB) and DTP on the same day at 8, 12 and 16 weeks of age; 60 were given the vaccines mixed in the syringe and 66 were given the vaccines separately. To minimize the injection volume the..