[1] Natl Inst Infect Dis, Antimicrobial Resistance Res Ctr, Tokyo, Japan
[2] Natl Inst Infect Dis, Field Epidemiol Training Program, Tokyo, Japan
[3] Sapporo City Publ Hlth Off, Sapporo, Hokkaido, Japan
[4] Natl Hosp Org Hokkaido, Med Ctr, Infect Control Off, Sapporo, Hokkaido, Japan
[5] Teine Keijinkai Hosp, Infect Control Team, Sapporo, Hokkaido, Japan
[6] Nakamura Mem Hosp, Sapporo, Hokkaido, Japan
[7] Sapporo Shirakabadai Hosp, Sapporo, Hokkaido, Japan
[8] Dept Publ Hlth, Saitama, Saitama, Japan
[9] Med Serv, Saitama, Saitama, Japan
[10] Nanbu Publ Hlth Ctr, Saitama, Saitama, Japan
[11] Toda Chuo Gen Hosp, Infect Control Team, Saitama, Japan
[12] Dept Publ Hlth, Gifu, Gifu, Japan
[13] Kamo Publ Hlth Ctr, Gifu, Gifu, Japan
[14] Kizawa Mem Hosp, Corona Response Team, Gifu, Japan
[15] Natl Inst Infect Dis, Infect Dis Surveillance Ctr, Tokyo, Japan