1. Environmental Microbiology Laboratory, Laboratory Sciences Division, International Centre for Diarrhoeal Disease Research, Dhaka 1212, Bangladesh
2. Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida 32611
3. Emerging Pathogens Institute
4. Department of Fisheries, University of Dhaka, Dhaka 1000, Bangladesh
5. Department of Pathology
6. Department of Molecular Genetics and Microbiology, University of Florida, Gainesville, Florida 32610