Collected Dataset / ILEVIA_Staff_vaccinated_Visit_3

The population is composed of health care workers in long-term care (LTC) facilities affiliated with Providence Health Care (PHC), located in Vancouver, and who have documented prior infection with SARS-CoV-2 (i.e. outbreak survivors) and have received the second dose of the COVID-19 vaccine no longer than one month prior enrolment.

Visit 3 took place 12 months after the first dose of vaccine in order to assess durability immunity. The survey questionnaire is modeled on the CITF core elements survey. Collected information includes demographics (e.g. age, sex), health status (e.g. known Covid-19 infection, testing, hospitalization; symptoms; chronic condition), travel history, COVID-19-related risk behaviours (mask-wearing, social distancing, public gathering, self-isolation) and COVID-19 vaccine details (date, side-effects). Blood samples are collected for immunological analyses. Specific data (e.g. clinical frailty scores, dates of prior COVID-19 tests) were collected form medical records (if available).