Ontario government mandating COVID-19 vaccine policies for high-risk settings It also includes people who reside in high-risk congregate settings, including long-term care homes, higher-risk licensed retirement homes and First Nations elder-care lodges.Those who qualify medically will need to wait eight weeks before they can receive a third dose of a vaccine while those who live in qualifying congregate settings will need to wait five months after their second dose to get topped up.“The vaccines provide strong protection against COVID-19 infection and severe outcomes,” said medical officer of health, Dr.
Hsiu-Li Wang.“For individuals at highest-risk, a third dose will offer an improved immune response and will help provide an extra layer.