1. From the Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville (J.W.J., Q.E.); the Liverpool School of Tropical Medicine, Liverpool, United Kingdom (I.B.); the Malawi Blood Transfusion Service, Blantyre (B.M.); Clinical Haematology, Department of Medicine, University of Cape Town and Groote Schuur Hospital, Cape Town, South Africa (V.J.L.); the Department of Hematology, Sultan Qaboos University Hospital, University Medical City, Muscat, Oman (A.Z.A.-R...