in this study , the in-vitro activity of ampicillin , chloramphenicol , trimethoprim-sulfamethoxazole ( tmp-smx ) , cefoperazone , ceftriaxone , cefotaxime , ceftizoxime , ofloxacin , pefloxacin , ciprofloxacin , and fleroxacin against recently isolated strains of s.typhi ( 20 ) and salmonella group b ( 42 ) have been investigated .
C0007554
cefotaxime
C0007560
ceftizoxime