1 Institute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, No. 17, Xu-Zhou Road, Taipei 100, Taiwan. Electronic address: minahant@dukes.jmu.edu.
2 Department of Infectious Diseases and Microbiology, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia. Electronic address: rebecca.davis4@health.nsw.gov.au.
4 Institute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, No. 17, Xu-Zhou Road, Taipei 100, Taiwan; Department of Public Health, College of Public Health, National Taiwan University, No. 17, Xu-Zhou Road, Taipei 100, Taiwan; Infectious Diseases Research and Education Center, Ministry of Health and Welfare and National Taiwan University, No. 17, Xu-Zhou Road, Taipei 100, Taiwan. Electronic address: kunhtsai@ntu.edu.tw.