Effect of Vaccination on Seroprevalence of COVID-19 among Blood donors - A cross-sectional Analytic Study from South India.

India achieved impressive strides by providing 1.7 billion doses of the COVID-19 vaccine to more than 940 million people, attaining 100% first dose coverage and 80% overall immunization coverage as of February 9, 2022. Compared to unvaccinated individuals, vaccinated people have considerably decreased risks of infection, serious illness, hospitalization, and death.