1 Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand. Electronic address: thanathom.cha@biotec.or.th.
2 Virology and Cell Technology Research Team, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), 113 Thailand Science Park, Phahonyothin Road, Khlong Nueng, Khlong Luang, Pathum Thani 12120, Thailand.
3 Department of Disease Control, Ministry of Public Health, Bamrasnaradura Infectious Diseases Institute, Nonthaburi 11000, Thailand.
4 Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand.