title: Molecular epidemiology of Campylobacter fetus subsp. fetus on bovine artificial insemination stations using pulsed field gel electrophoresis.
abstract: The presence of Campylobacter fetus subspecies fetus (Cff) on bovine artificial insemination (AI)-stations can have major economical consequences. More knowledge on the epidemiology of C. fetus is needed to control Cff infections at AI-stations. We assessed the epidemiology of Cff on AI-stations and the molecular relationship between Cff strains isolated from outbreaks on AI-stations. Thirteen Cff strains (two Cff strains per outbreak and one sporadic case) isolated from bulls housed on different AI-stations were selected and compared with ten unrelated bovine and ovine Cff isolates from different geographical regions. Molecular typing by pulsed field gel electrophoresis (PFGE) with the restriction enzymes SmaI, SalI and KpnI, yielded unique profiles for most unrelated strains but indistinguishable profiles for all isolates from the same outbreak. Computer aided analysis using a composite data set of SmaI, SalI and KpnI restriction profiles revealed separate clusters for outbreak strains. Thus, PFGE profiling of Cff strains is a valuable tool to discriminate between strains derived from separate outbreaks and to identify routes of infection.
authors.affiliation: Animal Sciences Group, Division of Infectious Diseases, P.O. Box 65, 8200 AB Lelystad, The Netherlands.
authors.forename: Marcel A P
authors.initials: MA
authors.lastname: van Bergen
authors.forename: Linda
authors.initials: L
authors.lastname: van der Graaf-van Bloois
authors.forename: Ingrid J R
authors.initials: IJ
authors.lastname: Visser
authors.forename: Jos P M
authors.initials: JP
authors.lastname: van Putten
authors.forename: Jaap A
authors.initials: JA
authors.lastname: Wagenaar
mesh_terms: D000818:Animals; D015373:Bacterial Typing Techniques / Q000662:veterinary; D002169:Campylobacter Infections / Q000453:epidemiology* / Q000382:microbiology* / Q000635:transmission; D002168:Campylobacter fetus / Q000145:classification / Q000235:genetics / Q000302:isolation & purification; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology* / Q000382:microbiology / Q000635:transmission; D004269:DNA, Bacterial / Q000032:analysis; D004196:Disease Outbreaks / Q000662:veterinary; D016521:Electrophoresis, Gel, Pulsed-Field / Q000379:methods / Q000662:veterinary*; D005260:Female; D007315:Insemination, Artificial / Q000662:veterinary; D008297:Male; D010802:Phylogeny; D015183:Restriction Mapping / Q000662:veterinary; D012756:Sheep; D012757:Sheep Diseases / Q000382:microbiology
chemical_list: D004269:DNA, Bacterial