cefotaxime , ceftizoxime , ceftriaxone and ceftazidime have been effective as therapy of meningitis due to e. coli , k. pneumoniae and proteus species , but failures have occurred with all of the cephalosporins when used to treat meningitis due to enterobacter spp . and serratia marcescens .
C0007554
cefotaxime
C0007560
ceftizoxime