NHK reported this morning that the MHLW has decided to begin large-scale antibody testing in Tokyo, Osaka, and Miyagi in June in order to ascertain the spread of the coronavirus in the nation. According to the network, the ministry will ask about 3,000 people in each of these prefectures to cooperate by undergoing the test in order to determine the spread of the virus in various regions and study the possibility of herd immunity. The network said this will be the first large-scale antibody test to be initiated by the government.