Washington State University, University of Nairobi - Center for Epidemiological Modelling and Analysis, Edinburgh Napier University, United Nations - Food and Agriculture Organization (FAO), affiliation not provided to SSRN, University of Nairobi, affiliation not provided to SSRN, Washington State University, Washington State University, Washington State University, Washington State University, Washington State University and Washington State University - Paul G. Allen School for Global Health