[1] Imperial Coll London, Ctr Int Child Hlth, Norfolk Pl, London W2 1PG, England
[2] MRC Unit, Fajara, Gambia
[3] Univ London, St Georges Hosp, Inst Infect & Immun, Vaccine Inst, London, England
[4] St Georges Univ Hosp NHS Fdn Trust, London, England
[5] Univ Southern Calif, Global Med, Los Angeles, CA USA
[6] Univ Warwick, Med Sch, Gibbet Hill, Coventry, W Midlands, England
[7] London Sch Hyg & Trop Med, Maternal Adolescent Reprod & Child Hlth Ctr, London, England
[8] Kings Coll London, London, England
[9] Haramaya Univ, Coll Hlth & Med Sci, Dire Dawa, Ethiopia
[10] Baylor Coll Med, Dept Pediat, Houston, TX 77030 USA
[11] Baylor Coll Med, Dept Mol Virol, Houston, TX 77030 USA
[12] Baylor Coll Med, Dept Microbiol, Houston, TX 77030 USA
[13] Johns Hopkins Bloomberg Sch Publ Hlth, Dept Int Hlth, Baltimore, MD USA
[14] Univ Witwatersrand, Med Res Council, Resp & Meningeal Pathogens Res Unit, Fac Hlth Sci, Johannesburg, South Africa
[15] Univ Witwatersrand, Dept Sci & Technology, Fac Hlth Sci, Natl Res Fdn Vaccine Preventable Dis, Johannesburg, South Africa
[16] Global Alliance Prevent Prematur & Stillbirth, Seattle, WA USA
[17] Univ Washington, Dept Obstet & Gynecol, Seattle, WA 98195 USA
[18] Chinese Univ Hong Kong, Dept Microbiol, Fac Med, Hong Kong, Hong Kong, Peoples R China
[19] Nat Inst Communicable Dis, Natl Hlth Lab Serv, Johannesburg, South Africa
[20] Univ Washington, Dept Global Hlth, Seattle, WA 98195 USA
[21] Bangladesh Inst Child Hlth, Dhaka, Bangladesh
[22] Nat Ctr Immunizat & Resp Dis, Ctr Dis Control & Prevent, Atlanta, GA USA
[23] Bill & Melinda Gates Fdn, Seattle, WA USA
[24] WHO, Geneva, Switzerland