Comparative Activity of Tetracycline, Minocycline, Clomocycline and Methacycline Against Group A, B, C and G β Haemolytic Streptococci
Tetracycline resistance in group A haemolytic streptococci was first described in the United Kingdom by Lowbury and Casan (1954).. By 1965, 44% of all β haemolytic streptococci isolated in the Institute of Laryngology and Otology, London, were resistant to tetracycline (Dadswell, 1967). Although the frequency of resistant strains declined in 1970, 28% of isolates remained tetracycline resistant (Rees, 1971).
KeywordsInhibitory Concentration Resistant Strain Comparative Activity Blood Agar Plate Tetracycline Resistance
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