Herd-level risk factors associated with Leptospira Hardjo infection in dairy herds in the southern Tohoku, Japan
A cross-sectional study was designed to generate information on the herd level prevalence and the risk factors for Leptospira serovar Hardjo (L. Hardjo) in Yamagata, the southern Tohoku, Japan. Bulk tank milk samples from 109 dairy herds were used to test the herd level sero-prevalence of L. Hardjo...
| Autores principales: | , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2018
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/90639 |
| _version_ | 1855540001651032064 |
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| author | Miyama, T. Watanabe, E. Ogata, Y. Urushiyama, Y. Kawahara, N. Makita, K. |
| author_browse | Kawahara, N. Makita, K. Miyama, T. Ogata, Y. Urushiyama, Y. Watanabe, E. |
| author_facet | Miyama, T. Watanabe, E. Ogata, Y. Urushiyama, Y. Kawahara, N. Makita, K. |
| author_sort | Miyama, T. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A cross-sectional study was designed to generate information on the herd level prevalence and the risk factors for Leptospira serovar Hardjo (L. Hardjo) in Yamagata, the southern Tohoku, Japan. Bulk tank milk samples from 109 dairy herds were used to test the herd level sero-prevalence of L. Hardjo using a commercial ELISA kit, which detects both L. interrogans serovar Hardjo and L. borgpetersenii serovar Hardjo. A questionnaire survey was conducted at the sampled farms, and univariable and multivariable analyses were performed. Spatial clustering of L. Hardjo at the herd level was examined using spatial scan statistics. Seventy-one herds were found to be positive for L. Hardjo, and the apparent herd prevalence was 65.1% (95% CI: 56.2-74.1%). The risk factors for sero-positivity were larger herd size (p = 0.004) and cows with a history of staying in Hokkaido (p < 0.001). The spatial scan statistic detected a most likely cluster (relative risk = 1.87, log likelihood ratio = 9.93, radius = 13.70 km, p < 0.01) in the southern part of the study area where there are large herd sizes and farm density is high. This study revealed that L. Hardjo is prevalent throughout Yamagata, and large scale herd owners introducing cows from Hokkaido in particular should be aware of the risk of infection. |
| format | Journal Article |
| id | CGSpace90639 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace906392024-05-01T08:19:39Z Herd-level risk factors associated with Leptospira Hardjo infection in dairy herds in the southern Tohoku, Japan Miyama, T. Watanabe, E. Ogata, Y. Urushiyama, Y. Kawahara, N. Makita, K. animal health dairies A cross-sectional study was designed to generate information on the herd level prevalence and the risk factors for Leptospira serovar Hardjo (L. Hardjo) in Yamagata, the southern Tohoku, Japan. Bulk tank milk samples from 109 dairy herds were used to test the herd level sero-prevalence of L. Hardjo using a commercial ELISA kit, which detects both L. interrogans serovar Hardjo and L. borgpetersenii serovar Hardjo. A questionnaire survey was conducted at the sampled farms, and univariable and multivariable analyses were performed. Spatial clustering of L. Hardjo at the herd level was examined using spatial scan statistics. Seventy-one herds were found to be positive for L. Hardjo, and the apparent herd prevalence was 65.1% (95% CI: 56.2-74.1%). The risk factors for sero-positivity were larger herd size (p = 0.004) and cows with a history of staying in Hokkaido (p < 0.001). The spatial scan statistic detected a most likely cluster (relative risk = 1.87, log likelihood ratio = 9.93, radius = 13.70 km, p < 0.01) in the southern part of the study area where there are large herd sizes and farm density is high. This study revealed that L. Hardjo is prevalent throughout Yamagata, and large scale herd owners introducing cows from Hokkaido in particular should be aware of the risk of infection. 2018-01 2018-01-30T09:16:21Z 2018-01-30T09:16:21Z Journal Article https://hdl.handle.net/10568/90639 en Open Access Elsevier Miyama, T., Watanabe, E., Ogata, Y., Urushiyama, Y., Kawahara, N. and Makita, K. 2018. Herd-level risk factors associated with Leptospira Hardjo infection in dairy herds in the southern Tohoku, Japan. Preventive Veterinary Medicine 149: 15–20. |
| spellingShingle | animal health dairies Miyama, T. Watanabe, E. Ogata, Y. Urushiyama, Y. Kawahara, N. Makita, K. Herd-level risk factors associated with Leptospira Hardjo infection in dairy herds in the southern Tohoku, Japan |
| title | Herd-level risk factors associated with Leptospira Hardjo infection in dairy herds in the southern Tohoku, Japan |
| title_full | Herd-level risk factors associated with Leptospira Hardjo infection in dairy herds in the southern Tohoku, Japan |
| title_fullStr | Herd-level risk factors associated with Leptospira Hardjo infection in dairy herds in the southern Tohoku, Japan |
| title_full_unstemmed | Herd-level risk factors associated with Leptospira Hardjo infection in dairy herds in the southern Tohoku, Japan |
| title_short | Herd-level risk factors associated with Leptospira Hardjo infection in dairy herds in the southern Tohoku, Japan |
| title_sort | herd level risk factors associated with leptospira hardjo infection in dairy herds in the southern tohoku japan |
| topic | animal health dairies |
| url | https://hdl.handle.net/10568/90639 |
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