1. Department of Environmental Health, College of Health and Medical sciences, Dilla University, Ethiopia
2. Department of Medical Microbiology, College of Health and Medical Science, Dilla University, Ethiopia
3. Department of Biology, College of Natural and Computational Science, Dilla University, Ethiopia
4. Water Resource Institute, Addis Ababa University, Ethiopia
5. College of Health – Yamfo, Department of Community Health, Ministry of Health Training Institution, Sunyani-Yamfo, Ghana
6. School of Public Health, collage of Health and Medical Sciences, Dilla University, Ethiopia
7. Department of Midwifery, College of Health and Medical sciences, Dilla University, Ethiopia
8. Department of Statistics, College of Natural and Computational sciences, Dilla University, Ethiopia