濃厚接触者の陽性率、第4波は2倍　福井県調査　変異株の感染力の強さか [蚤の市★]

濃厚接触者の陽性率、第4波は2倍　福井県調査　変異株の感染力の強さか [蚤の市★]
https://asahi.5ch.net/test/read.cgi/newsplus/1621206368

last-modified: 2021-05-17 10:16:38