Antipolyribosyl Ribitol Phosphate Response of Premature Infants to Primary and Booster Vaccination With a Combined Diphtheria-Tetanus-Acellular Pertussis-Hepatitis B-Inactivated Polio Virus/<i>Haemophilus influenzae</i>Type b Vaccine

Abstract

Primary vaccination with a hexavalent diphtheria-tetanus-acellular pertussis-hepatitis B-inactivated poliovirus/Haemophilus influenzae type b vaccine at 2, 4, and 6 months with a booster dose at 18 to 20 months elicits a satisfactory antipolyribosyl ribitol phosphate response in preterm infants compared with term controls. Immunologic response decreased with decreased gestational age and birth weight.