[1] Natl Ctr Infect Dis NCID, Singapore, Singapore
[2] Minist Hlth, Programme Res Epidem Preparedness & Response PREPA, Singapore, Singapore
[3] Natl Univ Singapore, Saw Swee Hock Sch Publ Hlth, Adv ID, Singapore, Singapore
[4] Natl Univ Singapore, Yong Loo Lin Sch Med, Infect Dis Translat Res Programme, Singapore, Singapore
[5] Duke NUS Med Sch, Programme Emerging Infect Dis, Singapore, Singapore
[6] Tan Tock Seng Hosp, Dept Infect Dis, Singapore, Singapore
[7] Nanyang Technol Univ, Lee Kong Chian Sch Med, Singapore, Singapore
[8] Natl Univ Singapore Hosp, Dept Med, Div Infect Dis, Singapore, Singapore
[9] Woodlands Gen Hosp, Singapore, Singapore