1Health Systems Department, Kenya Medical Research Institute-Wellcome Trust Collaborative Programme, Kilifi, Kenya
2Malaria Public Health & Epidemiology Group, Kenya Medical Research Institute-Wellcome Trust Collaborative Programme, Nairobi, Kenya
3Health and Literacy Intervention Project, Ukunda, Kenya
4Ministry of Public Health and Sanitation, District Medical Officer of Health, Msambweni, Kenya
5Department of Teacher Education, College of Charleston, Charleston, SC, USA
6Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK
7 Graduate School of Education, Harvard University , Cambridge, MA, USA
8Centre for Tropical Medicine, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, UK