[1] Karolinska Inst, Div Clin Microbiol, Dept Lab Med, Stockholm, Sweden
[2] Univ Quebec Abitibi Temiscamingue, World Hlth Programme, Rouyn Noranda, PQ, Canada
[3] Leeds Teaching Hosp NHS Trust, Dept Infect & Travel Med, Leeds, W Yorkshire, England
[4] Univ Calabar, Dept Internal Med, Coll Med Sci, Calabar, Cross River Sta, Nigeria
[5] Univ Ottawa, Sch Int Dev & Global Studies, Ottawa, ON, Canada
[6] Univ Oxford, George Inst Global Hlth, Oxford, England