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Please use this identifier to cite or link to this item: http://hdl.handle.net/11019/270

Title: Prevalence of antibodies to Leptospira interrogans serovar hardjo in bulk tank milk from unvaccinated irish dairy herds
Authors: Leonard, Nola
Mee, John F
Snijders, Sylvia
Mackie, Dermot
Keywords: Leptospira interrogans serovar hardjo
Issue Date: 1-Apr-2004
Publisher: Biomed Central
Citation: Irish Veterinary Journal. 2004 Apr 01;57(4):226-231
Series/Report no.: Irish Veterinary Journal
Abstract: Bulk tank milk samples, collected from 347 herds throughout the Republic of Ireland using a sampling frame based on seven milk-recording organisations, were tested by ELISA for antibodies to Leptospira interrogans serovar hardjo. These herds, which had not been vaccinated against leptospirosis within the previous five years, were categorised according to their province, milk-recording organisation and size. Two-hundred-and-seventy-three herds (79%) had a positive ELISA titre. Both the probability of a herd being seropositive and the antibody level in the herd milk sample were affected by the province (P < 0.05 and P < 0.01, respectively) and the herd size category (P < 0.05 and P < 0.01, respectively). Larger herds were significantly more likely to have positive reactions and higher mean concentrations of antibody. It was concluded that a high proportion of unvaccinated Irish dairy herds have been exposed to infection with Leptospira hardjo.
Description: peer-reviewed
URI: http://hdl.handle.net/11019/270
http://dx.doi.org/10.1186/2046-0481-57-4-226
Appears in Collections:Animal & Bioscience
Teagasc publications in Biomed Central

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