Undetected Circulation of African Swine Fever in Wild Boar, Asia

Abstract

African swine fever is a growing threat to the livestock industry. We examined data indicating that in most countries in Asia, most notified events were related to farm outbreaks; meanwhile, only a few wild boar cases were reported. We hypothesize the virus circulates unnoticed in wild boar populations in Asia.

Keywords: African swine fever; Asia; Sus scrofa; policy; surveillance; transmission; viruses; wild boar.

Figure

Proportion of wild boar cases out of the total number of reported African swine fever events in the most affected countries in Europe (orange) and Asia (blue). Numbers in parentheses at right side of bars indicate the reported number of wild boar cases and the reported number of outbreaks in farms, from the date of the first reported ASF event in these countries through May 8, 2020 (1).