An outbreak of swine fever on a farm in Gifu Prefecture earlier this month seemed to come to an end after the culling of hundreds of pigs and the disinfection of all related facilities.

But the prospects of officially declaring next month the containment of the classical swine fever look increasingly dim after the virus was detected in local wild boar carcasses after the prefectural government completed the disinfection of the farm.

By Sunday, six dead wild boars that were found within a radius of 10 km from the farm tested positive for the disease.