“…Independent variables were selected based on a literature review of factors associated with SARS-CoV-2 seroprevalence and vaccine uptake among employees of congregate settings, including correctional facilities ( 6 , 14 , 16 , 21 , 30 ). Variables were grouped into the following categories: sociodemographic (age, sex, ethnicity, education level, and yearly income), clinical (self-reported history of prior SARS-CoV-2 PCR testing, COVID-19 symptoms, medical comorbidities, and COVID-19 vaccination), and carceral characteristics (provincial prison, prison occupation, number of workdays, meal consumption with others at work, direct daily contact with people in prison, ability to physically distance, and perceived concern of SARS-CoV-2 acquisition in prison).…”