Disease surveillance during a large religious mass gathering in India: The Prayagraj Kumbh 2019 experience oleh Vikasendu Aggrawal, Tanzin Dikid, S.K. Jain, Ashu Pandey, Pradeep Khasnobis, Sushma Choudhary, Ramesh Chandra, Amol Patil, Kiran Kumar Maramraj, Ashok Talyan, Akhileshwar Singh, Binoy S. Babu, Akshay Kumar, Davendra Kumar, P.M. Raveesh, Jayanti Singh, Rakesh Kumar, S.S. Qadri, Preeti Madan, Vaishali Vardan, Kevisetue Anthony Dzeyie, Ginisha Gupta, Abhishek Mishra, T.P. Vaisakh, Purvi Patel, Azar Jainul, Suneet Kaur, Anubhav Shrivastava, Meera Dhuria, Ritu Chauhan, S.K. Singh