Absence of an Increase in Cardiorespiratory Events After Diphtheria-Tetanus-Acellular Pertussis Immunization in Preterm Infants: A Randomized, Multicenter Study

Preterm infants who received diphtheria-tetanus-acellular pertussis at 2 months after birth were no more likely to experience prolonged apnea and bradycardia than were control infants. This study supports the American Academy of Pediatrics recommendation regarding diphtheria-tetanus-acellular pertussis immunization at 2 months of age for preterm infants.