[1] Univ Maryland, Sch Med, Inst Human Virol, Baltimore, MD 21201 USA
[2] George Washington Univ, Sch Publ Hlth, Washington, DC USA
[3] Maryland Dept Hlth & Mental Hyg, Catonsville, MD USA
[4] Maryland Global Initiat Corp Tanzania, Dar Es Salaam, Tanzania
[5] Govt Nigeria, Fed Med Ctr, Idi Aba, Abeokuta, Nigeria
[6] Maryland Global Initiat Corp Nigeria, Abuja, Nigeria