1. Division of Virology National Institute of Cholera and Enteric Diseases, Beliaghata Kolkata West Bengal India
2. Collaborative Research Centre of Okayama University for Infectious Disease at Indian ICMR‐National Institute of Cholera and Enteric Diseases, Beliaghata Kolkata West Bengal India
3. Division of Epidemiology ICMR‐National Institute of Cholera and Enteric Diseases, Beliaghata Kolkata West Bengal India
4. Dr. B.C. Roy Post Graduate Institute of Pediatric Sciences Kolkata West Bengal India
5. Infectious diseases and Beliaghata General (ID & BG) Hospital, Beliaghata Kolkata West Bengal India
6. Regional Virus Research and Diagnostic Laboratory ICMR‐National Institute of Cholera and Enteric Diseases, Beliaghata Kolkata West Bengal India