About the Authors

Robert W Snow

To whom correspondence should be addressed. E-mail: rsnow@nairobi.kemri-wellcome.org

Affiliations Malaria Public Health and Epidemiology Group, Centre for Geographic Medicine, Kenyan Medical Research Institute (KEMRI)–University of Oxford–Wellcome Trust Collaborative Programme, Nairobi, Kenya , Centre for Tropical Medicine, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom

Carlos A Guerra

Affiliations Malaria Public Health and Epidemiology Group, Centre for Geographic Medicine, Kenyan Medical Research Institute (KEMRI)–University of Oxford–Wellcome Trust Collaborative Programme, Nairobi, Kenya , Spatial Ecology and Epidemiology Group, Department of Zoology, University of Oxford, Oxford, United Kingdom

Juliette J Mutheu

Affiliation Malaria Public Health and Epidemiology Group, Centre for Geographic Medicine, Kenyan Medical Research Institute (KEMRI)–University of Oxford–Wellcome Trust Collaborative Programme, Nairobi, Kenya

Simon I Hay

Affiliations Malaria Public Health and Epidemiology Group, Centre for Geographic Medicine, Kenyan Medical Research Institute (KEMRI)–University of Oxford–Wellcome Trust Collaborative Programme, Nairobi, Kenya , Spatial Ecology and Epidemiology Group, Department of Zoology, University of Oxford, Oxford, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

RWS wrote the manuscript. RWS, CAG, and JJM assembled the financial information. RWS, CAG, and SIH developed and implemented the methods to define the P. falciparum populations at risk data. All authors contributed to the final editing of the manuscript.