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      Limiting the Impacts of foot and mouth disease in large ruminants in northern Lao People's Democratic Republic by vaccination: a case study.

      Transboundary and Emerging Diseases
      Animals, Buffaloes, immunology, Cattle, Cattle Diseases, epidemiology, prevention & control, Disease Outbreaks, statistics & numerical data, veterinary, Foot-and-Mouth Disease, Foot-and-Mouth Disease Virus, Hemorrhagic Septicemia, Humans, Laos, Questionnaires, Ruminants, Viral Vaccines, therapeutic use

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          Abstract

          Foot and mouth disease (FMD) is the most important global transboundary livestock disease and is endemic in Lao People's Democratic Republic (Lao PDR) with outbreaks occurring regularly. Lao PDR shares borders with five countries and as a major thoroughfare for transboundary livestock movement, is vulnerable to the social and economic impacts of FMD. The FMD outbreak occurred in January 2009 in the Pek District, located in the north-eastern Lao PDR province of Xieng Khuang and involved all 111 villages in that district. In March 2009, we conducted a case study on the impacts of FMD in four villages in Pek District. In two villages cattle and buffalo were vaccinated for FMD recently and prior to the outbreak as part of an ongoing research project. In one of these villages, all cattle and buffalo were vaccinated and just over half the large ruminant population was vaccinated in the other village. The other two villages involved in the case study were located nearby but not part of the ongoing research project and no animals had been vaccinated. Data were collected from the four villages by interviewing the village animal health worker in each village using a standard questionnaire. Morbidity rates for the fully vaccinated village were 1% and 7.9% for the partially vaccinated village and were much lower compared with the two adjacent, unvaccinated villages where morbidity rates were 61% and 74.3% respectively. Estimates of the financial losses incurred were USD 1.7-1.9 per cow or buffalo for the fully vaccinated village, USD 6.9-8.1 for the partly vaccinated village and 52.4-70.8 USD in the unvaccinated villages, providing evidence that a large opportunity cost is incurred by failing to vaccinate in areas where the risk of FMD incursions is high.

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