title: Multiple typing of Salmonella typhimurium isolates: an epidemiological study.
abstract: An epidemiological study was carried out on sixty-four Salmonella typhimurium strains isolated in Palermo during the period January-July 1987 and identified at the Southern Italy Center of Enterobacteriaceae. These included 5 isolates from a small food-poisoning outbreak, which resulted antibiotic susceptible, not colicinogenic and untypable by the phage-type scheme of Anderson. Plasmid profile analysis was not a reliable method to differentiate them from non epidemic strains. The 5 epidemic isolates, belonging to biotype 25a, were assigned into NT 2 phage-type by an accessory set of phages developed in this laboratory. Such biotype/phage-type association was never detected in the remaining Salmonella typhimurium strains isolated during the first 7 months of 1987. Chromosomal DNA analysis provided additional information on the relationships among Salmonella typhimurium isolates.
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology; D015373:Bacterial Typing Techniques; D001434:Bacteriophage Typing; D002876:Chromosomes, Bacterial; D004269:DNA, Bacterial / Q000032:analysis; D004196:Disease Outbreaks; D004352:Drug Resistance, Microbial; D006801:Humans; D007558:Italy; D010957:Plasmids; D012478:Salmonella Food Poisoning / Q000453:epidemiology / Q000382:microbiology*; D012486:Salmonella typhimurium / Q000145:classification* / Q000187:drug effects / Q000235:genetics
chemical_list: D000900:Anti-Bacterial Agents; D004269:DNA, Bacterial