Funding for this research was provided by:
United States Agency for International Development (AID-663-LA-16-00001)
Received: 23 December 2020
Revised: 4 February 2021
Accepted: 6 February 2021
First Online: 16 February 2021
Ethics approval and consent to participate
: Permissions were sought and obtained from each of the farms where data were collected and local authorities. A letter of support was obtained from the Benishangul-Gumuz Regional Heath Bureau. The research was determined to be non-human subjects research by the Centers for Disease Control and Prevention (2017 − 227), and exempt from IRB review by Abt Associates (#0970).
: Not applicable.
: The authors declare that they have no competing interests.