Chiba Prefecture announced on the 24th that the avian influenza virus was detected in chickens at a poultry farm in Isumi City. This is the 13th prefecture to confirm the outbreak at poultry farms this season, following Kagawa and Fukuoka, and the first in eastern Japan. The prefecture has requested the Self-Defense Forces to dispatch a disaster, including the culling of about 1.16 million chickens for egg collection. The Ministry of Agriculture, Forestry and Fisheries has decided to hold the Epidemic Prevention Headquarters around and dispatch Deputy Minister Yasuhiro Hanashi to Chiba Prefecture.

According to Chiba Prefecture, about 220 birds were found dead in one of the six poultry houses on the 23rd at a poultry farm in Isumi City. A simple test showed a suspected positive reaction, which was confirmed by a genetic test on the 24th. It is an H5 type virus suspected of being highly pathogenic and is being investigated in detail.