cephalosporin therapy ( 71 % cefuroxime ) reduced the frequency of colonization with both esch . coli and klebsiella/enterobacter spp . but doubled the isolation rate of other gram-negative bacteria ( citrobacter , pseudomonas , proteus and acinetobacter spp . ) and tripled the incidence of specimens yielding no aerobic gram-negative growth .
C3536856
cephalosporin
C0007562
cefuroxime