Prakash, Om, Bhavin Solanki, Jay K Sheth, Chirag Shah, Mina Kadam, Sheetal Vyas, Aparajita Shukla, and Hemant Tiwari. 2021. “Covid-19 Serosurveillance Positivity in General Population: Comparison at Different Times”. National Journal of Community Medicine 12 (05):114-19. https://doi.org/10.5455/njcm.20210518084014.