Apnoea after the 2-month immunisation in extremely preterm infants: what happens with the 4-month immunisation?

Aim: To describe the outcome of the 4-month immunisation in a cohort of extremely preterm babies who had clinically significant apnoea after their 2-month immunisation.

Method: A retrospective audit was conducted from January 2001 to January 2011 at Flinders Medical Centre (FMC). Suspected apnoeic reactions to the 2-month immunisation in preterm infants ≤28 weeks + 6 days gestation were identified from the Neonatal Unit database.