Germany’s government said on Friday it is concerned about the spread of the pig disease African swine fever (ASF) in wild boars in Poland close to the German border.

Axar.az reports citing Reuters that Poland recorded 55 outbreaks of ASF in wild boars in December, the World Organization for Animal Health (OIE) said on Thursday. The disease was found only 30 kilometres (20 miles) from Germany, one of Europe’s major pork exporters.

ASF is harmless to humans but often deadly in pigs. It originated in Africa before spreading to Europe and Asia and has already killed hundreds of millions of pigs, while reshaping global meat and feed markets.