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An outbreak of African swine fever (ASF) was confirmed on Monday on a farm near the village of Więckowice near Poznań in western Poland, less than 150km (93 miles) from the border with Germany. African swine fever is a highly contagious virus which is fatal to pigs. It is transmitted directly between animals or through infected meat or animal feed and has also been seen as having the potential to transmit to humans. There is an ongoing outbreak in China that has already already wiped out 40% of pigs in the country.