title: [Salmonella typhi lysotypes in Iraq (1974-1979)].
abstract: The distribution of phage-types was studied among 434 strains of S. typhi from Bagdad, Amara and Bassora. Biotypes, colicinogeny, tetrathionate-reductase activity (TTR) and susceptibility to Salmonella phage O.I. were also studied. The most frequent phage-types in Irak were A, D1, E1 alpha, F1, M1, O, T, 46 and two other large groups of strains (I + IV and Vi degraded strains). Only 4.38% of S. typhi were TTR-; the strains of phage-type 53 were TTR+. Colicinogeny was demonstrated in 2.5% of S. typhi (lysotype 40, group I + IV and Vi degrades strains). All strains were lysed by Salmonella phage O.I, with the exception of three strains of phage-type T. Comparisons were made with the S. typhi phage-type in Iran and evidence was found for one regional epidemiological community in respect to the distribution of phage-types.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001434:Bacteriophage Typing; D004352:Drug Resistance, Microbial; D006801:Humans; D007493:Iraq; D008242:Lysogeny; D012485:Salmonella typhi / Q000145:classification* / Q000187:drug effects / Q000378:metabolism; D014435:Typhoid Fever / Q000382:microbiology
chemical_list: D000900:Anti-Bacterial Agents
vernacular_title: Lysotypes de Salmonella typhi en Irak (1974-1979).