Tawee Chotpitayasunondh*, Kumnuan Ungchusak†, Wanna Hanshaoworakul†, Supamit Chunsuthiwat†, Pathom Sawanpanyalert†, Rungruen Kijphati†, Sorasak Lochindarat*, Panida Srisan*, Pongsan Suwan†, Yutthasak Osotthanakorn†, Tanakorn Anantasetagoon†, Supornchai Kanjanawasri†, Sureeporn Tanupattarachai†, Jiranun Weerakul†, Ruangsri Chaiwirattana†, Monthira Maneerattanaporn†, Rapol Poolsavatkitikool†, Kulkunya Chokephaibulkit‡, Anucha Apisarnthanarak§, and Scott F. Dowell¶ 

Author affiliations: *Queen Sirikit National Institute of Child Health, Bangkok, Thailand; †Ministry of Public Health, Nonthaburi, Thailand; ‡Siriraj Hospital, Bangkok, Thailand; §Thammasat University Hospital, Bangkok, Thailand; ¶International Emerging Infections Program, Nonthaburi, Thailand