Background A previous community-based severe acute respiratory syndrome coronavirus 2
(SARS-CoV-2) serosurvey in Delhi in January 2021 reported a seroprevalence of 50.52 …

Abstract Background Earlier serosurveys in India revealed seroprevalence of severe acute
respiratory syndrome coronavirus-2 (SARS-CoV-2) of 0.73% in May–June 2020 and 7.1% in …

Background The first serosurvey conducted in Chennai, India in July 2020 reported sudden
acute respiratory syndrome coronavirus 2 (SARS-CoV-2) prevalence of 18.4%. The aim of …

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 …

Background Three rounds of a repeated cross-sectional serosurvey to estimate the change
in seroprevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) were …

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 …

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: The first round of national serosurvey in India was conducted in May-June
2020 among adults from 21 States. The second serosurvey was conducted in August …

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 …

Objective To determine population-based estimates of coronavirus disease 2019 (COVID-
19) in a densely populated urban community of Karachi, Pakistan. Methods Three cross …