Objectives We sought to understand the spread of SARS-CoV-2 infection in urban India,
which has surprisingly low COVID-19 deaths. Design Cross-sectional and trend analyses of …

A population-representative serological study was conducted in all districts of the state of
Tamil Nadu (population 72 million), India, in October-November 2020. State-level …

Background We conducted a repeat serosurvey in Delhi, India to estimate the
seroprevalence of SARS-CoV-2 in the general population and compare the antibody …

Methods: From May 11 to June 4, 2020, a randomly sampled, community-based survey was
conducted in 700 villages/wards, selected from the 70 districts of the 21 States of India …

Background Three rounds of a repeated cross-sectional serosurvey to estimate the
seroprevalence and trends of SARS-CoV-2 were conducted from August-October'2020 in …

Background The first national severe acute respiratory syndrome coronavirus 2 (SARS-CoV-
2) serosurvey in India, done in May–June, 2020, among adults aged 18 years or older from …

Background Current testing guidelines for COVID-19 substantially underestimates the
spread of SARS-CoV-2 in dense urban populations. Granular estimates of infection are …

Background SARS-CoV-2 has spread substantially within India over multiple waves of the
ongoing COVID-19 pandemic. However, the risk factors and disease burden associated with …

Although the vast majority of confirmed cases of COVID-19 are in low-and middle-income
countries, there are relatively few published studies on the epidemiology of SARS-CoV-2 in …

Background COVID-19 emerged as a global pandemic in 2020, spreading rapidly to most
parts of the world. The proportion of infected individuals in a population can be reliably …