Risk Factors for Brucella Seroprevalence in Peri-Urban Dairy Farms in Five Indian Cities

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Lindahl, JohannaUppsala universitet,Institutionen för medicinsk biokemi och mikrobiologi (author)

Risk Factors for Brucella Seroprevalence in Peri-Urban Dairy Farms in Five Indian Cities

Article/chapterEnglish2019

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2019-04-22
MDPI AG,2019
electronicrdacarrier

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LIBRIS-ID:oai:DiVA.org:uu-384634
https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-384634URI
https://doi.org/10.3390/tropicalmed4020070DOI

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Language:English
Summary in:English

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Brucellosis is endemic among dairy animals in India, contributing to production losses and posing a health risk to people, especially farmers and others in close contact with dairy animals or their products. Growing urban populations demand increased milk supplies, resulting in intensifying dairy production at the peri-urban fringe. Peri-urban dairying is under-studied but has implications for disease transmission, both positive and negative. In this cross-sectional study, five Indian cities were selected to represent different geographies and urbanization extent. Around each, we randomly selected 34 peri-urban villages, and in each village three smallholder dairy farms (defined as having a maximum of 10 dairy animals) were randomly selected. The farmers were interviewed, and milk samples were taken from up to three animals. These were tested using a commercial ELISA for antibodies against Brucella abortus, and factors associated with herd seroprevalence were identified. In all, 164 out of 1163 cows (14.1%, 95% CI 12.2-16.2%) were seropositive for Brucella. In total, 91 out of 510 farms (17.8%, 95% CI 14.6-21.4%) had at least one positive animal, and out of these, just seven farmers stated that they had vaccinated against brucellosis. In four cities, the farm-level seroprevalence ranged between 1.4-5.2%, while the fifth city had a seroprevalence of 72.5%. This city had larger, zero-grazing herds, used artificial insemination to a much higher degree, replaced their animals by purchasing from their neighbors, were less likely to contact a veterinarian in case of sick animals, and were also judged to be less clean. Within the high-prevalence city, farms were at higher risk of being infected if they had a young owner and if they were judged less clean. In the low-prevalence cities, no risk factors could be identified. In conclusion, this study has identified that a city can have a high burden of infected animals in the peri-urban areas, but that seroprevalence is strongly influenced by the husbandry system. Increased intensification can be associated with increased risk, and thus the practices associated with this, such as artificial insemination, are also associated with increased risk. These results may be important to identify high-risk areas for prioritizing interventions and for policy decisions influencing the structure and development of the dairy industry.

Subject headings and genre

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Infektionsmedicin hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Infectious Medicine hsv//eng
Brucella abortus
prevalence
smallholder farming
urban livestock keeping
zoonoses

Added entries (persons, corporate bodies, meetings, titles ...)

Gill, Jatinder Paul Singh (author)
Hazarika, Razibuddin Ahmed (author)
Fairoze, Nadeem Mohamed (author)
Bedi, Jasbir S (author)
Dohoo, Ian (author)
Chauhan, Abhimanyu Singh (author)
Grace, Delia (author)
Kakkar, Manish (author)
Uppsala universitetInstitutionen för medicinsk biokemi och mikrobiologi (creator_code:org_t)

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In:Tropical Medicine and Infectious Disease: MDPI AG4:22414-6366

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