Respiratory syncytial virus
RSV program April update
The 2025-2026 Ontario RSV prevention program for infants, high-risk children and pregnant individuals ended April 17, 2026.
The adult RSV program continues into spring and summer.
The respiratory syncytial virus (RSV) causes respiratory illness, particularly in infants, young children, and older adults, affecting the lungs and airways. It can lead to a serious lung infection called bronchiolitis, which can cause difficulty breathing.
RSV is most active from November to April.
There are 2 RSV prevention programs in Ontario:
- Infants and high-risk children which also includes pregnant individuals.
- Adults.
Talk to your health care provider about protecting your family against RSV to help reduce your risk of severe illness.
Learn more: Respiratory Syncytial Virus (RSV) prevention programs.
The 2025–2026 RSV prevention program for infants, high‑risk children and pregnant individuals ended on April 17, 2026. Information about the next season will be shared closer to the fall, once the Ministry of Health makes an official announcement.
Learn more: Infant and high-risk children RSV prevention program
The following adults are eligible for the RSV vaccine:
- All adults 75 and older.
- Adults 60 to 74 years who are at higher risk such as those living in long-term care, or with certain medical conditions.
Talk to your primary care provider (doctor or nurse practitioner) to receive the vaccine if you meet the eligibility criteria.
Peel Public Health RSV clinics for older adults have ended for the 2025-2026 respiratory season. Eligible residents are encouraged to receive their RSV vaccine from their primary care provider or at a walk-in clinic.
If you don't meet publicly funded eligibility for the vaccine, you can pay for the vaccine at a pharmacy with a prescription from your primary care provider.
Individuals who received a dose in a previous season do not require an additional dose this year.
Learn more: Adult RSV prevention program.
Severe reactions are very rare and may include trouble breathing, swelling of the face or mouth, hives, seizures, or fever over 40 C. Call 911 if you are having a medical emergency. Call or make an appointment with your health care provider. Report any severe reactions to your health care provider.
Access Health811 or call 811 (TTY 1-866-797-0007) for health advice and information 24 hours a day, 7 days a week.
You can also book a free phone appointment with the VaxFacts clinic or SickKids Immunization InfoLine if you have questions or concerns about the RSV vaccine or any other vaccines.