Funding for this research was provided by:
National Institutes of Health (D43 TW001505, R01 A1050243 and U19 AI129326)
Received: 20 June 2019
Accepted: 31 December 2019
First Online: 27 January 2020
Ethics approval and consent to participate
: Ethical clearance was obtained from the Institutional Review Board of Institute of Health, Jimma University, National Ethics Review Committee (NERC) of Ethiopia and University of California, Irvine, USA. Verbal consent was sought from the Zonal and District health offices. Consent was also obtained from Arjo-Dedessa sugar development project office. This field study did not involve any endangered or protected species.
: Not applicable.
: The authors declare that they have no competing interests.