COVID-19 antibody testing study: a nested substudy within Alberta's Tomorrow Project (ATP) in Alberta, Canada.

ABSTRACT:

Purpose

The Alberta's Tomorrow Project (ATP) prospective cohort study was established in 2000 to investigate the causes of cancer and chronic disease. The cohort consists of almost 55 000 participants aged 35-69 years at the time of recruitment. From 2020 to 2022, ATP conducted a longitudinal substudy, the COVID-19 Antibody Testing (CAT) study, nested in this existing cohort, to understand the spread and impact of the SARS-CoV-2. In this cohort profile, we describe the CAT study design, recruitment and initial findings.

Participants

In this prospective cohort substudy, ~4000 participants completed online surveys and provided blood samples at a study centre every 4 months for 1 year, across four cities in Alberta, Canada. The study was launched on a rolling basis beginning in

SUBMITTER: Nejatinamini S 

PROVIDER: S-EPMC12625869 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature