1. Center for Emerging and Re-Emerging Infectious Diseases, Division of Allergy and Infectious Diseases, Department of Medicine, University of Washington, Seattle, Washington, USA
2. Service des Maladies Infectieuses et Tropicales, Ibrahima Diop Mar, Centre Hospitalier National Universitaire de Fann, Universite Cheikh Anta Diop de Dakar, Dakar, Senegal
3. Centre de Sante de Ziguinchor, Ziguinchor, Senegal
4. Department of Global Health, University of Washington, Seattle, Washington, USA