[1] Johns Hopkins Univ, Sch Med, Dept Gynecol & Obstet, Div Maternal Fetal Med, Baltimore, MD 21205 USA
[2] Johns Hopkins Univ, Sch Med, Dept Pathol, Baltimore, MD 21205 USA
[3] Childrens Natl Hlth Syst, Sibley Mem Hosp, Div Maternal Fetal Med, Washington, DC 20010 USA
[4] Childrens Natl Hlth Syst, Div Pathol, Washington, DC USA
[5] Childrens Natl Hlth Syst, Med Genet Res Ctr, Washington, DC USA
[6] Childrens Natl Hlth Syst, Div Pediat Infect Dis, Washington, DC USA
[7] Childrens Natl Hlth Syst, Dept Diagnost Radiol & Imaging, Washington, DC USA
[8] Childrens Natl Hlth Syst, Div Fetal & Transit Med, Fetal Med Inst, Washington, DC 20010 USA
[9] George Washington Univ, Sch Med & Hlth Sci, Dept Integrat Syst Biol, Washington, DC 20052 USA
[10] George Washington Univ, Sch Med & Hlth Sci, Dept Pediat & Microbiol Immunol & Trop Med, Washington, DC 20052 USA
[11] George Washington Univ, Sch Med & Hlth Sci, Dept Radiol & Pediat, Washington, DC 20052 USA
[12] Ctr Dis Control & Prevent CDC, Ctr Policy Planning & Evaluat, Washington, DC USA
[13] Dist Columbia Dept Hlth, Council State & Territorial Epidemiologists CST A, Washington, DC USA
[14] One Med Grp, Washington, DC USA
[15] Univ Helsinki, Dept Virol, Helsinki, Finland
[16] Univ Helsinki, Dept Vet Biosci, Helsinki, Finland
[17] Univ Helsinki, Dept Virol & Immunol, Helsinki, Finland
[18] Helsinki Univ Hosp, Helsinki, Finland
[19] CDC, Arboviral Dis Branch, Div Vector Borne Dis, Natl Ctr Emerging Zoonot Infect Dis, Atlanta, GA 30333 USA