1. Division of Parasitic Diseases and Malaria, US Centers for Disease Control and Prevention, Atlanta, Georgia;
2. Institute of Human Virology, Abuja, Nigeria;
3. Center for Global Health, US Centers for Disease Control and Prevention, Atlanta, Georgia;
4. National Reference Laboratory, Nigeria Centre for Disease Control, Abuja, Nigeria;
5. Division of Global HIV and TB, US Centers for Disease Control and Prevention, Abuja, Nigeria