Clayton O. Onyango*, Antoinette A. Grobbelaar†, Georgina V.F. Gibson†, Rosemary C. Sang*, Abdourahmane Sow‡, Robert Swanepoel†, and Felicity J. Burt†
Author affiliations: *World Health Organization Collaborating Centre for Arbovirus and Viral Hemorrhagic Fever Reference and Research at Kenya Medical Research Institute, Nairobi, Kenya; †National Institute for Communicable Diseases, Sandringham, Johannesburg, South Africa; ‡World Health Organization of Southern Sudan, Nairobi, Kenya
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