Seroprevalence trends of anti-SARS-CoV-2 antibodies and associated risk factors: a population-based study.

ABSTRACT:

Purpose

We aimed to assess the seroprevalence trends of SARS-CoV-2 antibodies in several Swiss cantons between May 2020 and September 2021 and investigate risk factors for seropositivity and their changes over time.

Methods

We conducted repeated population-based serological studies in different Swiss regions using a common methodology. We defined three study periods: May-October 2020 (period 1, prior to vaccination), November 2020-mid-May 2021 (period 2, first months of the vaccination campaign), and mid-May-September 2021 (period 3, a large share of the population vaccinated). We measured anti-spike IgG. Participants provided information on sociodemographic and socioeconomic characteristics, health status, and adherence to preventive measures. We estimated seroprevalence wi

SUBMITTER: Tancredi S 

PROVIDER: S-EPMC9985433 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature