Shibuya is participating in a national movement that calls in the government to carry out a 100% PCR test for all citizens, which costs 54 trillion yen.[45][46][51] Shibuya said he didn't think it would be valid for a nationwide school closure at the end of February.[52] Using the data from the Institute of Infectious Diseases, Shibuya said, "I can't say with 100% certainty, but I can see that there was an excess mortality caused by another infection , the new coronavirus, in February."[53][54] Shibuya said that the infection status of Japan, which can be read from the data released by the government and Tokyo, was insufficient, and lacked important informations on epidemiology.[54] Shibuya criticized the timing of the state of emergency as being a week late.[48] Shibuya predicted that Japan would have to lock down and lifting repeatedly, as the number of seriously ill patients and deaths would increase after June in Japan.[53]