1. Department of Community Medicine , Faculty of Medicine, , Chiang Mai 50200 , Thailand
2. Chiang Mai University , Faculty of Medicine, , Chiang Mai 50200 , Thailand
3. Environmental and Occupational Medicine Excellence Center , Faculty of Medicine, , Chiang Mai 50200 , Thailand
4. Department of Clinical Tropical Medicine , Faculty of Tropical Medicine, , Bangkok 10400 , Thailand
5. Mahidol University , Faculty of Tropical Medicine, , Bangkok 10400 , Thailand
6. Center for Infectious Disease Education and Research , Department of Viral Infections, Research Institute for Microbial Diseases, , Osaka, Suita 565-0871 , Japan
7. Osaka University , Department of Viral Infections, Research Institute for Microbial Diseases, , Osaka, Suita 565-0871 , Japan
8. Thai Travel Clinic , Hospital for Tropical Diseases, Faculty of Tropical Medicine, , Bangkok 10400 , Thailand
9. Mahidol University , Hospital for Tropical Diseases, Faculty of Tropical Medicine, , Bangkok 10400 , Thailand
10. Center of Data Analytics and Knowledge Synthesis for Health Care, Chiang Mai University , Chiang Mai 50200 , Thailand
11. School of Public Health, University of Minnesota , Minnesota, MN 55414 , USA
12. Department of Virology, US Army Medical Directorate of the Armed Force Research Institute of Medical Sciences , Bangkok 10400 , Thailand
13. Division of Infectious Diseases and Tropical Medicine , Department of Medicine, Faculty of Medicine, , Chiang Mai 50200 , Thailand
14. Chiang Mai University , Department of Medicine, Faculty of Medicine, , Chiang Mai 50200 , Thailand
15. Institute for Global Health and Translational Science, SUNY Upstate Medical University , Syracuse, NY 13210 , USA
16. Department of Microbiology and Immunology, SUNY Upstate Medical University , Syracuse, NY 13210 , USA