A descriptive survey of porcine epidemic diarrhea in pig populations in northern Vietnam
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A descriptive survey of porcine epidemic diarrhea in pig populations in northern Vietnam Thi Ngan Mai 1,2 & Wataru Yamazaki 3 & Thanh Phong Bui 4 & Van Giap Nguyen 2 & Thi My Le Huynh 2 & Shuya Mitoma 1 & Hala El Daous 1,5 & Emmanuel Kabali 6 & Junzo Norimine 7,8 & Satoshi Sekiguchi 7,8 Received: 8 April 2020 / Accepted: 24 September 2020 # Springer Nature B.V. 2020
Abstract Porcine epidemic diarrhea (PED) virus (PEDV) is a globally emerging and re-emerging epizootic swine virus that causes massive economic losses in the swine industry, with high mortality in piglets. In Vietnam, PED first emerged in 2009 and has now developed to an endemic stage. This is the first cross-sectional survey performed to evaluate the proportion of PEDV-positive swine farms in Vietnam from January 2018 to February 2019. Fecal samples from 327 pig farms in northern Vietnam were collected and tested for PEDV infection by reverse transcription-loop-mediated isothermal amplification (RT-LAMP) method. The proportion of PEDV-positive farms was 30.9% and PEDV-positive farms were distributed throughout the study area. The highest proportion of PEDV-positive farms was 70% (7/10) among nucleus production type farms (P < 0.05). Higher proportions of PEDV-positive farms were found in the Northeast and Red River Delta areas, which are the major areas of pig production (P < 0.05). The proportion of PEDV-positive farms was higher among larger farms (P < 0.05). Our findings illustrate the high proportion of PEDV-positive farms in the Vietnamese pig population and will help to better understand the epidemiological dynamics of PED infection, to estimate impact, and establish and improve prevention and control measures. Keywords PEDV . Pooled sample . Descriptive survey . Cross-sectional study . Vietnam
Introduction Economic impacts of transboundary animal diseases (TADs), which include impacts on production, food security, trade, and environment. Porcine epidemic diarrhea (PED) is one of the TADs, worldwide emerging and re-emerging epizootic swine disease. The global re-emergence of PED requires a deeper understanding of the dynamics of porcine epidemic diarrhea
virus (PEDV) spread in the world. This study focused on the current epidemiology of PEDV in Vietnam. Our results will encourage stakeholders in swine industry to implement preventive measures for PEDV control appropriately. PEDV is the causative agent of PED. PED is a devastating disease characterized by acute enteritis, vomiting, and severe watery diarrhea and imposes massive economic losses in the swine industry with high morbidity and mortality in piglets (Song
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11250-020-02416-1) contains supplementary material, which is available to authorized users. * Satoshi Sekiguchi [email protected]
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Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Qalyubia, Egypt
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Graduate School of Medicine and Veterinary Medicine, University of Miyazaki, Miyazaki, Ja
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