Beatrice Wasunna1,2
, Dejan Zurovac2,3,4
, Catherine A Goodman2,5
and Robert W Snow2,3 
1Eastern and Southern Africa Centre of International Parasite Control (ESACIPAC)/KEMRI, P.O. Box 54840-00200, Nairobi, Kenya
2Malaria Public Health & Epidemiology Group, Centre for Geographic Medicine Research-Coast, Kenya Medical Research Institute/Wellcome Trust Research Programme, P.O. Box 43640, 00100 GPO, Nairobi, Kenya
3Centre for Tropical Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford, OX3 9DU, UK
4Department of International Health, School of Public Health and Center for International Health and Development, 5th Floor, Boston University School of Public Health, 85 East Concord Street, Boston, MA 02118, USA
5London School of Hygiene and Tropical Medicine, Health Policy Unit, Keppel Street, London, WC1E 7HT, UK