[1] St Georges Univ London, Paediat Infect Dis Res Grp, Inst Infect & Immun, Jenner Wing,Level 2 Mailpoint J2C, London SW17 0RE, England
[2] St Georges Univ London, Vaccine Inst, Inst Infect & Immun, London, England
[3] Univ Autonoma Barcelona, Dept Paediat Obstet & Gynecol & Prevent Med & Pu, Barcelona, Spain
[4] Publ Hlth England, Pathogen Immun Grp, Porton Down, England
[5] MRC, Uganda Virus Res Inst, Entebbe, Uganda
[6] London Sch Hyg & Trop Med, Uganda Res Unit, Entebbe, Uganda