Why is it hard to capture all COVID-19 infections and related deaths? For modelling growth of an epidemic, what we observe are deaths, cases or hospitalisations. How do we validate the extent of unreported cases: We can cross-check under-reporting of infections directly with serosurveys carried out in India. Factoring in the nearly 11 million COVID-19 cases reported by January 8 (assuming most cases are adults), this points to an implied under-reporting factor of roughly 16 for infections. Is India testing enough during wave 2?

Source: The Hindu May 03, 2021 18:32 UTC