[1] Ctr Dis Control & Prevent, Atlanta, GA USA
[2] Charite Univ Med Berlin, Berlin, Germany
[3] Free Univ Berlin, Berlin, Germany
[4] Humboldt Univ, Berlin, Germany
[5] Inst Virol, Berlin, Germany
[6] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
[7] Univ Gothenburg, Gothenburg, Sweden
[8] Sahlgrens Univ Hosp, Gothenburg, Sweden
[9] Jichi Med Univ, Sch Med, Shimotsuke, Tochigi, Japan
[10] Wageningen Univ & Res, Lelystad, Netherlands
[11] Univ Pecs, Med Sch, Dept Med Microbiol & Immunol, Pecs, Hungary
[12] Univ Texas Med Branch, Galveston, TX 77555 USA
[13] Friedrich Loeffler Inst, Greifswald Insel Riems, Riems, Germany
[14] Univ Oxford, Oxford, England
[15] Univ Edinburgh, Edinburgh, Midlothian, Scotland