1. Organization for Public Health and Environmental Management, Lalitpur 44700, Nepal
2. Expert Microbiology Research Unit, Finnish Institute for Health and Welfare, 70701 Kuopio, Finland
3. Center of Research Excellence in Wastewater Based Epidemiology, Morgan State University, Baltimore, MD 21251, USA
4. Interdisciplinary Center for River Basin Environment, University of Yamanashi, 4-3-11 Takeda, Kofu 400-8511, Yamanashi, Japan
5. Central Department of Microbiology, Tribhuvan University, Kathmandu 46000, Nepal
6. Environment and Public Health Organization, Kathmandu 44600, Nepal
7. Department of Environmental Health, Tulane University, New Orleans, LA 70112, USA