Special immunization considerations of the preterm infant.

More changes to the American Academy of Pediatrics Recommended Immunization Schedule have occurred in the past 3 years than in the previous decade. Selection of the optimal immunization regimen is essential to forestall immunization delay. New complications to the schedule pose challenges for the care of preterm infants who are at increased risk of mortality and morbidity from vaccine-preventable diseases. This article reviews the relevant data regarding immunization of preterm infants and suggests strategies for prevention of immunization delay. Protection of preterm infants, especially for pertussis and influenza, involves not just assessing a child's vaccination status but those of other close contacts and household members.