[1] Third Hosp Kunming City, Kunming 650041, Peoples R China
[2] Chinese Ctr Dis Control & Prevent, Natl Inst Viral Dis Control & Prevent, State Key Lab Infect Dis Prevent & Control, Beijing 102206, Peoples R China
[3] Collaborat Innovat Ctr Diag & Treatment Infect Di, Hangzhou 310058, Zhejiang, Peoples R China