For Residents:

Living in one of the 9 Nursing Homes that participate in this study

Having a SARS-COV-2 post vaccination serology.

Having no objection for using the results of the serology for the purpose of this analysis

For Health Professionals:

Working in one of the 9 Nursing Homes that participate in this study,

Having a SARS-COV-2 post vaccination serology.

Having no objection for using the results of the serology for the purpose of this analysis

SaRS-Cov-2 Antibodies Following Exposure to Coronavirus Disease 2019 (COVID-19) and/or Vaccination in Nursing Homes