About the Authors
University of Georgia, Athens, Georgia, United States of America
Kenya Medical Research Institute, Kisumu, Kenya
Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: MRG WES DMK DGC. Performed the experiments: MRG. Analyzed the data: MRG CLB DGC. Contributed reagents/materials/analysis tools: PNM WES DMK DGC. Wrote the paper: MRG. Oraganized and implemented longitudinal field work: PNM DMK.