title: Epidemiological study of Salmonella enteritidis strains of animal origin in Belgium.
abstract: Since 1987, the number of cases of salmonellosis caused by Salmonella enteritidis has considerably increased in Western Europe. Comparison of endemic animal strains isolated in Belgium from 1976-84 with strains isolated from 1987 on shows that the strains which cause the current epidemic have no features distinguishing them from the previously-isolated strains and that furthermore, they do not constitute a bacterial clone. They belong to 13 different lysotypes and in most cases remain sensitive to antibiotics. Nevertheless, the lysotype 33 (which belongs to the phage type 4 has increased significantly. It encompasses 37% of the animal strains isolated in Belgium from 1987-9, but only 7% of the strains isolated from 1976-84. It is worth noting that the endemic as well as the epidemic strains contain a virulence plasmid sharing sequence similarities with the FIB and FIIA plasmid replicons and with the VirA and VirB virulence regions of the S. typhimurium virulent plasmid: pIP1350.
authors.affiliation: Institut National de Recherches Vétérinaires, Bruxelles.
authors.forename: P
authors.initials: P
authors.lastname: Pohl
authors.forename: P
authors.initials: P
authors.lastname: Lintermans
authors.forename: M
authors.initials: M
authors.lastname: Marin
authors.forename: M
authors.initials: M
authors.lastname: Couturier
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001434:Bacteriophage Typing; D001530:Belgium; D004269:DNA, Bacterial / Q000032:analysis; D004285:Dogs; D005838:Genotype; D006168:Guinea Pigs; D006736:Horses; D006801:Humans; D010957:Plasmids; D011200:Poultry; D012477:Salmonella enteritidis / Q000145:classification* / Q000187:drug effects / Q000235:genetics
chemical_list: D000900:Anti-Bacterial Agents; D004269:DNA, Bacterial