Penicillin Resistant Staphylococci

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Abstract
In a study of the susceptibility of 115 strains of staphylococci to penicillin 16 or 13.9% were found to be resistant. All of the resistant strains produced penicillinase; none of the susceptible strains had this property. Many of the penicil-linase-producing staphylococci produce coagulase, indicating the importance of these organisms in infection. Naturally resistant staphylococci appear to be resistant as a result of their ability to produce penicillinase.