Funding for this research was provided by:
Global Emerging Infections Surveillance (GEIS)/Armed Forces Health Surveillance Branch (ProMIS P0119_18_KY_012.06)
Received: 6 February 2020
Accepted: 6 September 2020
First Online: 25 September 2020
Ethics approval and consent to participate
: Ethical approval was granted by both Kenya Medical Research Institute (KEMRI) Scientific and Ethics Review Unit (KEMRI#3385) and Walter Reed Army Institute of Research Institutional Review Board (WRAIR#1743A). This was a retrospective laboratory based study which analyzed archived samples. Consent to participate was not applicable since there was no interaction with subjects.
: Not applicable.
: Authors declare no conflict of interest in this work.