Chloramphenicol resistance in Salmonella typhi. Report from Bombay.
Chloramphenicol resistance to Salmonella typhi in 1989 was 16% in Hinduja Hospital. From Jan to June 1990, this resistance has increased to 81%. 74 strains of blood culture isolated of S typhi obtained from Jan to June were subjected to antibiotic sensitivity testing by disc diffusion technique of Kirby and Bauer 60 strains were found to show a block resistance tochloramphenicol, Ampicillin, Co-trimoxazole, Streptomycin, Tetracycline and Carbenicillin. All strains were sensitive to quinolones. Resistance was record and MIC done in 50 resistant strains by modified National Committee for Clinica…
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