Influence of antibiotic therapy on faecal carriage of P-fimbriated XXXX and other gram-negative bacteria in neonates.

@entity1 @entity801 @entity2261 @entity795 @entity4005 @entity869 @entity526
The influence of previous antibiotic therapy on the aerobic faecal flora, including P-fimbriated @entity526 , was studied in 953 neonates at discharge from 22 neonatal wards in Sweden. Antibiotics, mainly @entity869 (with or without @entity801 ) or @entity2261 , had been received by 37% of the @entity1 . Treatment with @entity869 (with or without @entity801 ) increased @entity4005 /Enterobacter and reduced Esch. coli colonization. Cephalosporin therapy (71% @entity2261 ) reduced the frequency of colonization with both Esch. coli and @entity4005 /Enterobacter spp. but doubled the isolation rate of other Gram-negative bacteria (Citrobacter, Pseudomonas, @entity795 spp.) and tripled the incidence of specimens yielding no aerobic Gram-negative growth. @entity801 showed no significant ecological impact. The selection of @entity4005 /Enterobacter and P-negative Esch. coli strains by @entity869 was correlated with their resistance to this agent, while the association between P-fimbriated Esch. coli and @entity2261 therapy was not related to @entity2261 resistance.
