1. School of Public Health; University of Ghana; Legon Ghana
2. Noguchi Memorial Institute for Medical Research; University of Ghana; Legon Ghana
3. Section of Environmental Parasitology; Tokyo Medical and Dental University; Tokyo Japan
4. School of Allied Health Sciences; University of Ghana; Korlebu Ghana
5. Department of Molecular Microbiology and Immunology; Johns Hopkins Bloomberg School of Public Health; Baltimore MD USA