[1] Guangdong Prov Ctr Dis Control & Prevent, Key Lab Emergency Pathogen Detect, Guangzhou 511430, Guangdong, Peoples R China
[2] Southern Med Univ, Dept Epidemiol, Sch Publ Hlth & Trop Med, Guangzhou 510515, Guangdong, Peoples R China
[3] Sun Yat Sen Univ, Dept Epidemiol, Sch Publ Hlth, Guangzhou 510080, Guangdong, Peoples R China
[4] Sun Yat Sen Univ, Inst Immunol, Zhongshan Sch Med, Guangzhou 510080, Guangdong, Peoples R China