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 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 …

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 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 …

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 Prevalence of IgG antibodies against SARS-CoV-2 infection provides essential
information for deciding disease prevention and mitigation measures. We estimate the …

Background Pakistan is among the first low-and middle-income countries affected by COVID-
19 pandemic. Monitoring progress through serial sero-surveys, particularly at household …

This was a population based cross-sectional study carried out to estimate and compare the
seroprevalence, hidden prevalence and determine the demographic risk factors associated …

To understand the spread of SARS-CoV2, in August and September 2020, the Council of
Scientific and Industrial Research (India) conducted a serosurvey across its constituent …

Background: Estimating seroepidemiolgical prevalence of SARS-CoV-2 antibody is an
essential public health strategy. There is insufficient evidence of prevalence among those …