Davey, Sanjeev, Rajesh Jain, and Anuradha Davey. “COVID 2019 Asymptomatic Infections across the World- Can It Be a Time Bomb for Future Pandemic Recurrence? A Systematic Review of Surveillance Strategies”. Archives of Community Medicine and Public Health 6, no. 2 (August 29, 2020): 186–195. Accessed September 7, 2025. https://www.healthdisgroup.com/acmph/article/view/ACMPH-6-203.