title: In vitro studies with cefazolin.
abstract: Susceptibilities of 259 isolates of pathogenic bacteria to cefazolin were measured by broth and agar dilution procedures. Beta-hemolytic streptococci were inhibited by 0.25 mug/ml, whereas Staphylococcus aureus and alphahemolytic streptococci were inhibited by 2.0 mug/ml. Enterococci were resistant to less than 32 mug/ml. Wide variation was seen with gram-negative species. Most isolates of Klebsiella species and Proteus mirabilis were inhibited by 4.0 or 8.0 mug/ml. Escherichia coli were less susceptible, and most isolates of Pseudomonas aeruginosa, Serratia species, and Enterobacter species were resistant to 128 mug/ml.
mesh_terms: D001419:Bacteria / Q000187:drug effects; D002511:Cephalosporins / Q000494:pharmacology*; D003470:Culture Media; D008826:Microbial Sensitivity Tests; D013440:Sulfides / Q000494:pharmacology; D013777:Tetrazoles / Q000494:pharmacology; D013830:Thiadiazoles / Q000494:pharmacology
chemical_list: D002511:Cephalosporins; D003470:Culture Media; D013440:Sulfides; D013777:Tetrazoles; D013830:Thiadiazoles