[Sensitivity to antibacterial drugs and phage type pattern of Salmonella typhi isolated from patients in 1990].

The causative agents of typhoid fever isolated in 1990 in the Soviet Union were mainly sensitive to ampicillin, tetracyclines and streptomycin and slightly sensitive to rifampicin and gentamicin. The number of the strains resistant to rifampicin and gentamicin is ever increasing. The strains of Salmonella typhi isolated in the Soviet Union were sensitive to chloramphenicol unlike the strains isolated in India which were characterized by high resistance to this antibiotic. The phage type pattern of the isolates was mainly represented by the phage types A1 (57.5 per cent) and B1 (30.8 per cent). No relation between separate phage types of S. typhi and their antibiotic resistance phenotypes was detected.