ABSTRACT
20% methicillin resistant Staph. aureus strains were recovered over three months period out of 200 strains of Staph. aureus isolated from the Surgical Department of the Main Alexandria University Hospital. Being of the same biochemical character they denote an original single strain responsible for their propagation. This necessitate prompt isolation of such patients and optimal hand washing practices an antiseptic technique when dealing with such patients. Definite cross resistance between methicillin resistance and cephalosporins has been proven. Thus, the existence of a reservoir of methicillin resistant strains in a hospital should alter not only the approach to treatment of established infections but also affect the choice of preoperative prophylactic regimens. The most threatening epidemiologic aspect is the potential for spread of these nosocomial strains into the community
Subject(s)
Drug Resistance , Methicillin , CephalothinABSTRACT
Anaerobes were isolated from 48% of postoperative infected gynecologic operations. The high rate of anaerobe recovery could be attributed to the collection of acceptable specimens onto serum wet cotton swabs, to the rapid transport in Stuart's transport medium, anaerobic enrichment in cooked meat medium, immediate appropriate plating of specimens upon arrival in the laboratory and the toxemic criteria determined by various specific biochemical patterns. In 73.9% of cases they could be only recovered after anaerobic enrichment into cooked meat medium and the rest on direct anaerobic plating. Anaerobic Gram-negative bacilli were the major anaerobic isolates followed by anaerobic Gram-positive cocci. Bacteroides fragiles was the principal pathogen constituting 41.7% of recovered anaerobes. Peptococci formed 25% of anaerobes, while each of fusibacterium and peptostreptococci 16.7%. No anaerobe was isolated in pure culture but as a rule mixed with aerobes and facultative anaerobes which emphasizes a synergistic process playing a complex ecosystem