1. Division of Virology, ICMR- National Institute of Cholera and Enteric Disease, Kolkata, West Bengal, India
2. Division of Epidemiology, ICMR- National Institute of Cholera and Enteric Disease, Kolkata, West Bengal, India
3. Division of Bacteriology, ICMR- National Institute of Cholera and Enteric Disease, Kolkata, West Bengal, India