Bui Nghia Vuong

Can Xuan Minh

Hung Nguyen-Viet

Lindahl, Johanna F.

Long Pham-Thanh

Lundkvist, A.

Nguyen Tien Thang

English

CGSpace

Regional symposium on research into smallholderpig production, health, and pork safetyHanoi, 27-29 March 2019Regional symposium on research into smallholderpig production, health, and pork safetyHanoi, 27-29 March 2019Seropositivity against flaviviruses among pigs in HanoiPham Thanh Long1,2, Nguyen Tien Thang1,2, Nguyen Viet Hung1, Bui Nghia Vuong3, Can Xuan Minh4, Åke Lundkvist2, Johanna Lindahl1,2 1. International Livestock Research Institute (ILRI), Hanoi, Viet Nam  2. Uppsala University, Uppsala, Sweden  3. National Institute for Veterinary Research(NIVR), Hanoi, Viet Nam  4. Sub-Department of Animal Health and Livestock Production (SDAHLP) of Hanoi, Viet NamIntroductionPigs are among the most commonly kept livestock in Vietnam, and in Hanoicity alone there were estimates that about 1.6 million pigs in 2017. Whilepig production is important for food security and livelihoods, they cancontribute to increased risks of transmission of zoonotic infections.Japanese encephalitis virus (JEV) is a mosquito-borne virus causing seriousdisease in humans, and pigs are considered an amplifying host. Aserological survey of pigs in four peri-urban districts of Hanoi wasconducted to understand the association between presence of arthropod-borne viruses and the livestock keeping in Hanoi.Methods▪ From September to November 2018, blood samples were collected from704 pigs in 190 small-scale farms in the districts of Bac Tu Liem, ChuongMy, Dan Phuong and Ha Dong of Hanoi city.▪ The pig sera were submitted to NIVR and tested for antibodies againstWest Nile Virus by c-ELISA, since this ELISA cross-reacts with allflaviviruses.Preliminary results by c-ELISATable 2. Result in the districtsTest result Number of samples %Positive 607 86Negative 75 11Doubt 22 3Total 704 100Table 1. Overall result of testingDistrictNumber of pig farms testedNumber of pig farms positive%Bac Tu Liem 54 53 98Chuong My 53 53 100Dan Phuong 49 39 80Ha Dong 34 32 94Total 190 177 93ConclusionHigh seroprevalence in pig population in Hanoi peri-urbanarea indicates Flavivirus was widely circulating in the city, andthe most likely virus to infect pigs is JEV. This implies that pigproduction in Hanoi could contribute to increasing the risk forinfections in humans, therefore intervention for vectors inHanoi city to mitigate the risk of diseases is stronglyrecommended.AcknowledgementWe would like to express our special thanks to ILRI, NIVR,Hanoi SDAHLP and Uppsala University, Sweden for technicalassistance and financial support in this research project.

Seropositivity against flaviviruses among pigs in Hanoi

https://cgspace.cgiar.org/bitstream/10568/101910/1/Flaviviruses.pdf

Seropositivity against flaviviruses among pigs in Hanoi

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