against all the hexavalent antigens, said Federico Martinón-Torres, MD, of Hospital Clinico Universitario de Santiago de Compostela, Spain, and his associates.
DTaP5-IPV-HB-Hib combination vaccine has a five-antigen pertussis component and contains polyribosylribitol phosphate–Neisseria meningitidis serogroup B outer membrane protein [PRP-OMP] Hib conjugate, while DTaP5-IPV-Hib contains polyribosylribitol phosphate-tetanus toxoid (PRP-T) Hib conjugate.
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The phase III, open-label, single-arm study in 12 Spanish hospitals and health centers included 384 infants who had received only one dose of monovalent hepatitis B vaccine within 3 days of birth prior to starting the study. They then received the hexa/penta/hexa combo vaccines concomitantly with the MCC vaccine. The response rate was 100% against Hib and 98.9% against hepatitis B.
Also, a “robust immune response was induced against all other disease antigens,” said Dr. Martinón-Torres and his colleagues. Coadministration of the combo vaccines with the meningococcal vaccine likewise did not appear to compromise immunogenicity of any of the vaccine antigens.
Use of the hexa/penta/hexa combo vaccine series was mostly safe and well tolerated, the researchers said.
Read more in the journal Vaccine (2017 Jun 17;35[30];3764-72).