About the Authors

Tabitha Wanja Mwangi

tmwangi@kilifi.kemri-wellcome.org

Affiliation Kenya Medical Research Institute, Centre for Geographic Medicine Research, Coast/Wellcome Trust Collaborative Program, Kilifi, Kenya

Gregory Fegan

Affiliations Kenya Medical Research Institute, Centre for Geographic Medicine Research, Coast/Wellcome Trust Collaborative Program, Kilifi, Kenya, Infectious Diseases Epidemiology Unit, Department of Population Health, London School of Hygiene and Tropical Medicine, London, United Kingdom

Thomas Neil Williams

Affiliations Kenya Medical Research Institute, Centre for Geographic Medicine Research, Coast/Wellcome Trust Collaborative Program, Kilifi, Kenya, Centre of Tropical Medicine, Nuffield Department of Clinical Medicine, John Radcliffe Hospital, Oxford, United Kingdom

Sam Muchina Kinyanjui

Affiliations Kenya Medical Research Institute, Centre for Geographic Medicine Research, Coast/Wellcome Trust Collaborative Program, Kilifi, Kenya, Centre of Tropical Medicine, Nuffield Department of Clinical Medicine, John Radcliffe Hospital, Oxford, United Kingdom

Robert William Snow

Affiliations Centre of Tropical Medicine, Nuffield Department of Clinical Medicine, John Radcliffe Hospital, Oxford, United Kingdom, Kenya Medical Research Institute/Wellcome Trust Collaborative Program, Nairobi, Kenya

Kevin Marsh

Affiliations Kenya Medical Research Institute, Centre for Geographic Medicine Research, Coast/Wellcome Trust Collaborative Program, Kilifi, Kenya, Centre of Tropical Medicine, Nuffield Department of Clinical Medicine, John Radcliffe Hospital, Oxford, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TM KM RS SK. Performed the experiments: TM TW. Analyzed the data: TM GF. Contributed reagents/materials/analysis tools: GF. Wrote the paper: TM. Other: Contributed comments to the paper: GF SK RS KM TW. Gave advice on statistical analysis throughout the writing of the paper: GF.