TAIPEI (Taiwan News) – African swine fever tests at 40 farms in central Taiwan proved negative, but no results are in yet for five slaughterhouses, the Ministry of Agriculture said Saturday.

A suspected outbreak of the fever was found Wednesday at a farm in Taichung’s Wuqi District, leading to 15-day bans for the transportation, slaughter, and feeding of pigs with kitchen waste. After four pigs died at a farm in Changhua where a truck had visited that had been to the Wuqi farm, the authorities ordered tests on all related locations.

The 34 farms in Taichung — five in Changhua, and one in Miaoli where the truck had been — all tested negative for African swine fever, the Liberty Times reported. Tests were still being conducted Saturday on two related slaughterhouses, with three others still to be probed, according to the authorities.

Agriculture Deputy Minister Tu Wen-jane (杜文珍) compared the effort to contain African swine fever to a war. Farmers should report any situation they found out of the ordinary, because if they did not do so, the whole sector could be harmed, she said.

As the fever has an incubation period of 15 days, the ministry says it will continue to be vigilant and conduct all necessary inspections and tests.