Low prevalence of Salmonella in Swedish dairy herds highlight differences between serotypes

Preventive Veterinary Medicine
Estelle C C ÅgrenJenny Frössling

Abstract

Legislated Salmonella control in Sweden has been in place since the 1960s. The purpose of this study was to investigate presence of Salmonella antibodies in dairy cattle herds and to provide a basis for decisions on how surveillance and control can be improved. Bulk milk samples from all Swedish dairy herds (n=4 683) were analysed with two different ELISAs; one detecting antibodies against Salmonella Dublin (Dublin ELISA), and one detecting antibodies against several of the serotypes causing bovine salmonellosis including S. Dublin (Bovine ELISA). Information about herds, i.e. geographical location, local animal density, number of test positive herds within 5km, animal trade and herd size, was based on register data. The results confirm a very low prevalence of Salmonella in Swedish dairy herds throughout the country with the exception of an island in the southeast. The test positive herds split into two groups; 41 herds (1%) positive in the Dublin ELISA, and 101 herds (2%) positive in the Bovine ELISA but negative in the Dublin ELISA. Geographical location of positive herds, and comparison of the results of the screening with serotypes previously isolated from some of the herds, indicated that the first group represents herds ...Continue Reading

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Citations

Sep 15, 2018·Zoonoses and Public Health·Kevin J CummingsBelinda S Thompson
Jan 8, 2019·Animal : an International Journal of Animal Bioscience·S S LewerinK Sörén
Aug 2, 2018·Journal of Water and Health·Ekaterina SokolovaKaisa Sörén
Aug 28, 2018·Journal of Dairy Science·E C C ÅgrenJ Frössling
Jul 7, 2018·Journal of Veterinary Research·Salima-Yamina DerdourFarida Ghalmi

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