African Swine Fever: Unexpected Epidemiology Fuels Spread into European Union

Central European wild boar (Sus scrofa). A reservoir host for African swine fever? Richard Bartz

African swine fever (ASF) is a deadly, contagious viral disease of pigs for which there is no vaccine or treatment. While primarily a scourge of sub-Saharan Africa, the disease’s recent spread into Russia and the European Union reminds us that ASF is not just a tropical disease.

Alarmingly for large swine-producing regions, from China to the EU and the United States, ASF’s behavior in the current Eastern European outbreak differs significantly from what was expected based on previous ASF outbreaks in Western Europe. These differences make expansion of the disease much more difficult to control, threatening huge economic losses to affected countries. Through October 2015, over 750,000 domestic pigs in Europe have died from or were culled to prevent the spread of the current ASF outbreak.

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