title: Repeated isolation of Salmonella enterica Goverdhan, a very rare serovar, from Danish poultry surveillance samples.
abstract: We report here the appearance of a very rare serovar of Salmonella, S. enterica subsp. enterica serovar Goverdhan, in routine Salmonella surveillance samples from Danish poultry production. S. Goverdhan was found on nine occasions: in one broiler breeder farm in October 2010, four broiler farms and one broiler breeder farm in June-September 2012, two broiler breeder flocks simultaneously in June 2013, and one layer flock in July 2013. The five isolates from 2012 and the three isolates from 2013 had identical pulsed-field gel electrophoresis profiles, whereas the profile of the isolate from 2010 deviated in a single band. It is the first time this serovar has been described in samples from poultry. The origin of the bacterium is still unknown, but it is suggested that it may have been a pseudo-outbreak caused by contaminated sampling material.
authors.affiliation: National Veterinary Institute, Technical University of Denmark, Bülowsvej 27, DK-1870 Frederiksberg C, Denmark. Electronic address: kape@vet.dtu.dk.
authors.forename: Karl
authors.initials: K
authors.lastname: Pedersen
authors.affiliation: National Food Institute, Technical University of Denmark, Mørkhøj Bygade 19, DK-2860 Søborg, Denmark.
authors.forename: Gitte
authors.initials: G
authors.lastname: Sørensen
authors.affiliation: Federal Institute for Risk Assessment, Diedersdorfer Weg 1, 12277 Berlin, Germany.
authors.forename: Istvan
authors.initials: I
authors.lastname: Szabo
authors.affiliation: University of Zürich, Vetsuisse Faculty, Institute for Food Safety and Hygiene, National Centre for Enteropathogenic Bacteria and Listeria (NENT), Winterthurerstrasse 272, CH-8057 Zürich, Switzerland.
authors.forename: Herbert
authors.initials: H
authors.lastname: Hächler
authors.affiliation: Institut Pasteur, Centre National de Référence E. coli, Shigella, and Salmonella, 28 rue du Docteur Roux, 75724 Paris cedex 15, France.
authors.forename: Simon
authors.initials: S
authors.lastname: Le Hello
mesh_terms: D000818:Animals; D003718:Denmark / Q000453:epidemiology; D016521:Electrophoresis, Gel, Pulsed-Field / Q000662:veterinary; D011200:Poultry / Q000382:microbiology*; D011201:Poultry Diseases / Q000453:epidemiology* / Q000382:microbiology; D012481:Salmonella Infections, Animal / Q000453:epidemiology* / Q000382:microbiology; D019779:Salmonella enterica / Q000235:genetics / Q000276:immunology* / Q000302:isolation & purification; D065288:Serogroup
keywords: Gauze sock samples; Poultry; Pseudo-outbreak; Salmonella Goverdhan