XXXX colonization and infection after discharge from a term newborn nursery.

@entity1 @entity1641 @entity1569 @entity794 @entity2024 @entity922
During a 6-month period, term @entity1 underwent nasal and umbilical swabbing within 96 hours of delivery and again at 1 to 18 (mean 3.8) weeks after discharge. Swabs were inoculated onto @entity1641 blood agar and all @entity794 isolates were phage typed. Two hundred three @entity1 were enrolled and follow-up was obtained for 181 (89%). Thirty-two of 181 (17.6%) were initially colonized, of whom 12 (37.5%) were colonized on follow-up. Thirty-two of 181 became colonized subsequent to hospital discharge. No single phage type predominated. Twenty-five @entity1 were diagnosed to have @entity922 (11), @entity2024 (10), and @entity1569 (5). Six of these were colonized with @entity794 initially, although organisms of the same phage type were not recovered from cultures obtained at the time of clinical illness. There was no significant difference in the rate of infections in colonized (19%) versus non-colonized (12%) @entity1 . In five @entity1 where @entity794 was recovered at the time of symptoms, all organisms were acquired subsequent to discharge. We conclude that nursery colonization with @entity794 did not lead to clinical illness, and clinical illnesses previously ascribed to @entity794 frequently occur in the absence of these bacteria.
