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Henry Ford Hospital Medical Journal

Abstract

The in vitro susceptibility was determined of 274 isolates to cephalothin and two new antibiotics, cefamandole and cefoxitin. Cefamandole was comparable to cephalothin in preventing growth of cultures of the gram positive organisms except for penicillin-resistant Staphylococcus aureus which was more sensitive to cephalothin. Cefamandole was more active than cephalothin against all the gram negative bacteria including Haemophilus influenzae and in addition it was active against many strains of Enterobacter sp. Cefoxitin was less active than cephalothin against the gram positive organisms but it was more active against most of the gram negative bacteria. In addition. It was active against Serratia and indole positive Proteus which are uniformly resistant to cephalothin.

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