preparing covid vaccine

This Version Posted: October 21, 2021

Ontario is now offering a third dose of a COVID-19 vaccine for specific vulnerable groups, including the elderly and those who are moderately to severely immunocompromised.

People who are eligible for a third dose must speak with their health care provider, primary care provider, specialist or hospital specialty program prior to receiving the third dose. People can also call the Provincial Vaccine Contact Centre at 1-833-943-3900 if they have further questions about eligibility.

Currently, Ontario is recommending third doses of a COVID-19 vaccine for the following at-risk individuals:

Moderately to Severely Immunocompromised:

  • Individuals receiving active treatment (e.g., chemotherapy, targeted therapies, immunotherapy) for solid tumour or hematologic malignancies.
  • Recipients of solid-organ transplant and taking immunosuppressive therapy
  • Recipients of chimeric antigen receptor (CAR)-T-cell therapy or hematopoietic stem cell transplant (within 2 years of transplantation or taking immunosuppression therapy).
  • Individuals with moderate to severe primary immunodeficiency (e.g., DiGeorge syndrome, Wiskott-Aldrich syndrome).
  • Individuals with Stage 3 or advanced untreated HIV infection and those with acquired immunodeficiency syndrome.
  • Individuals receiving active treatment with the following categories of immunosuppressive therapies: anti-B cell therapies (monoclonal antibodies targeting CD19, CD20 and CD22), high-dose systemic corticosteroids, alkylating agents, antimetabolites, or tumor-necrosis factor (TNF) inhibitors and other biologic agents that are significantly immunosuppressive.

Vulnerable Elderly in Congregate Settings:

  • Residents of long-term care homes, retirement homes, Elder Care Lodges, and elderly residents living in other congregate settings (such as assisted-living facilities, chronic care hospitals, naturally occurring congregate retirement settings/congregate senior’s apartment buildings, etc.).