[1] Kumasi Ctr Collaborat Res Trop Med KCCR, South End,Asuogya Rd, Kumasi 0395028, Ghana
[2] Kwame Nkrumah Univ Sci & Technol, Dept Theoret & Appl Biol, Kumasi 0395028, Ghana
[3] Komfo Anokye Teaching Hosp, Dept Emergency Med, Okomfo Anokye Rd, Kumasi 0349094, Ghana
[4] Bernhard Nocht Inst Trop Med BNITM, Dept Infect Dis Epidemiol, Bernhard Nocht Str 74, D-20359 Hamburg, Germany
[5] German Ctr Infect Res DZIF, Partner Site Hamburg Lubeck Borstel Riems, D-20359 Hamburg, Germany
[6] Univ Med Ctr Hamburg Eppendorf UKE, Trop Med 2, D-20251 Hamburg, Germany