1. Department of Medicine, Bangladesh Agricultural University, Mymensingh, Bangladesh.
2. Unit of Epidemiology, Department of Animal Health, Institute of Tropical Medicine, Antwerpen, Belgium.
3. Research Unit of Epidemiology and Risk Analysis applied to the Veterinary Sciences (UREAR), Department of Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium.
4. Department of Bacteriology and Immunology, Veterinary and Agrochemical Research Centre, Brussels, Belgium.
5. Department of Microbiology, Mymensingh Medical College, Mymensingh, Bangladesh.