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South African Medical Journal

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Ecology of R Factors

D Marcos, DR Woods

Abstract


The resistance to antimicrobial drugs and the incidence of R factors were determined in coliform bacteria, isolated from stool and environmental (soil, water) specimens from an urban Xhosa community, as well as from a remote drug-frea Xhosa community in the Transkei. The significant reservoir of R factors in the urban environmental and stool specimens indicates the strong selective force of antimicrobial drugs. This contrasts with the low frequency of R faciors from the remote community and its environment.

S. Afr. Med. J., 47, 340 (1973).



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