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. 1978 Sep;31(9):850-4.
doi: 10.1136/jcp.31.9.850.

R-factor mediated trimethoprim resistance: result of two three-month clinical surveys

S G Amyes, A M Emmerson, J T Smith

R-factor mediated trimethoprim resistance: result of two three-month clinical surveys

S G Amyes et al. J Clin Pathol. 1978 Sep.

Abstract

All urinary tract isolates were monitored in the Whittington Hospital, London for trimethoprim resistance over a three-month period in 1975; this survey was repeated 18 months later in 1977. In the later survey the incidence of trimethoprim resistance had increased significantly, and the proportion of strains carrying R-factors conferring trimethoprim resistance had nearly doubled. The pattern of resistances associated with R-factor trimethoprim resistance also changed betweeen these two surveys.

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