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swine with syringe and vaccine and broken wording of african swine fever Freer Law/iStock/GettyImagesPlus

Mongolia reports first African swine fever outbreak

Case discovered five months after outbreak started in China.

by Siraphob Thanthong-Knight

Asian pork producers need to redouble efforts to combat African swine fever after Mongolia reported its first outbreak, just five months after the deadly pig disease was first discovered in China.

“This indicates that it’s very difficult for any country to avoid introduction of the virus,” Dirk Pfeiffer, a professor in the Department of Infectious Diseases and Public Health at the City University of Hong Kong, said in an interview. The fact that Mongolia has a low pig population density “further strengthens the hypothesis of widespread geographical presence of the virus,”  he said.

The outbreak in a second Asian country means China’s neighbors should intensify efforts to prepare for the disease that’s prompted mass pig cullings in China -- the world’s biggest hog market. The United Nations’ Food and Agriculture Organization, which is spearheading an international effort to control the virus, has already said the spread of African swine fever to other Asian countries is a near certainty.

Animal health authorities in Asia have increased border surveillance and China has slaughtered more than 900,000 pigs to contain the disease, which isn’t known to harm humans. With no vaccine to protect animals, researchers say the virus -- which can survive for more than a year in dry-cured ham -- is a particular risk to countries, such as Thailand, Vietnam and Myanmar.

The Mongolian outbreak occurred in a “backyard” swine operation in the center of Bulgan region, which borders Russia, according to a posting on the World Organization for Animal Health’s website dated Tuesday. A total of 214 hogs were killed and disposed of after 85 cases of the ASF were found at the operation. More work need to be done to determine whether the disease arrived in Mongolia from China or eastern Europe, Pfeiffer said.

“No single country can afford the illusion that they can isolate themselves from the regional dynamics of how this virus is being moved around,” Pfeiffer said. “It will get more complicated if and where it gets established in wild pig populations.”

Pork prices in China have been hammered as farms increase slaughtering to avoid contamination, bolstering supply. By the first week of January, prices in northeast provinces had fallen 34 percent from a year earlier and 16 percent in the north, according to data published by the nation’s Ministry of Agriculture and Rural Affairs.

To contact the reporter on this story: Siraphob Thanthong-Knight in Bangkok at rthanthongkn@bloomberg.net

To contact the editors responsible for this story: Anna Kitanaka at akitanaka@bloomberg.net Andrew Hobbs, Atul Prakash

© 2019 Bloomberg L.P

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