[1] Univ Texas, Houston Sch Publ Hlth, Ctr Infect Dis, Houston, TX 77030 USA
[2] St Lukes Episcopal Hosp, Houston, TX 77030 USA
[3] Baylor Coll Med, Houston, TX 77030 USA
[4] Kenya Govt Med Res Ctr, Ctr Geog Med Res, Kilifi, Kenya
[5] Kenya Govt Med Res Ctr, Nairobi, Kenya
[6] Goa Med Coll, Bambolin, India
[7] Minist Hlth, Western Area Hlth Adm, Kingston, Jamaica
[8] Univ Zurich, Travel Clin, Zurich, Switzerland
[9] GlaxoSmithKline Biol, Rixensart, Belgium
[10] Univ Munich, Dept Infect Dis & Trop Med, Munich, Germany