Monovalent boosters protects individuals against one strain of COVID-19 (the current predominant strain).

• Our clinics are administering the Pfizer monovalent booster
• Ages 12 – 17: The Ontario Ministry of Health recommends 6 month interval between 2nd dose and booster – may receive booster if it has been at least 3 months since 2nd dose, and with informed consent
• Ages 18+: Must have received 2nd dose at least 3 months ago
• For individuals who recently had COVID-19 infection, should be at least 3 months since symptom onset or positive test (if asymptomatic)

Bivalent boosters protects individuals against two strains of COVID-19 (the original strain and the current predominant strain). The Ontario Ministry of Health recommends a Fall Booster 6 months since your last dose, regardless of how many boosters you have received. Moderna bivalent is available for these eligible groups:

• Individuals who are 18 years and older
• Individuals who are 12 years and older with moderately to severely immunocompromising conditions

Fall Booster (bivalent) for individuals who are moderately or severely immunocompromised:

• Receiving active treatment (such as chemotherapy, targeted therapies, immunotherapy) for solid tumour or hematologic malignancies
• Solid-organ transplant recipients taking immunosuppressive therapy
• (CAR)-T-cell therapy or hematopoietic stem cell transplant recipients (within 2 years of transplantation or taking immunosuppression therapy)
• Have moderate to severe primary immunodeficiency (such as DiGeorge syndrome, Wiskott-Aldrich syndrome)
• Have stage 3 or advanced untreated HIV infection and those with AIDS
• Receiving active treatment with specific immunosuppressive therapies, including 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

Other important information:

• Timing of booster dose should be decided with your treating provider in order to optimize the immune response from the vaccine and minimize delays in management of your underlying conditions
• Must bring a proof of treatment note from your care provider, or a list of medications when you arrive at the vaccine clinic

• Must provide a form of photo ID with name and birthdate, such as a government-issued ID if you have one
• Please bring the vaccination receipt for your last dose, if you are able (download a copy from the Ministry’s COVID-19 Vaccination website)
• If your first vaccination dose(s) was with a non-Health Canada approved vaccine, please bring proof of your vaccination status