[1] Univ Toronto, Toronto, ON M4N 3M5, Canada
[2] Univ Liverpool, Liverpool Sch Trop Med, Liverpool L3 5QA, Merseyside, England
[3] Univ N Carolina, Dept Med, Chapel Hill, NC USA
[4] Univ Sherbrooke, Clin Ctr Hosp, Ctr Rech, Sherbrooke, PQ, Canada
[5] Univ Washington, Dept Med, Seattle, WA USA
[6] WHO, Hlth Secur & Environm, CH-1211 Geneva, Switzerland
[7] Naval Med Res Ctr, Ft Detrick, MD USA
[8] Tulane Univ, Dept Med, Sch Publ Hlth & Trop Med, New Orleans, LA 70118 USA
[9] Tulane Univ, Sch Publ Hlth & Trop Med, Dept Clin Med & Pediat, New Orleans, LA 70118 USA
[10] Tulane Univ, Sch Publ Hlth & Trop Med, Dept Trop Med, New Orleans, LA USA
[11] London Sch Hyg & Trop Med, London WC1, England
[12] Univ Calgary, Dept Community Hlth Sci, Calgary, AB, Canada
[13] Toshima Hosp, Toshima, Japan
[14] Donka Hosp, Conakry, Guinea
[15] Ctr Hosp Dax Cote Argent, Dax, France
[16] WHO, Pandem & Epidem Dis, CH-1211 Geneva, Switzerland
[17] Natl Ctr Global Hlth & Med, Div Preparedness & Emerging Infect, Tokyo, Japan
[18] Nihon Univ, Tokyo, Japan
[19] Polyclin Bordeaux Nord Aquitaine, Bordeaux, France
[20] Univ S Manchester Hosp, Emergency Dept, Manchester M20 8LR, Lancs, England