Halton Region Public Health: Office of the Medical Officer of Health
Quick facts
- As of April 4, the Ministry of Health has declared the end of the 2024–2025 RSV season for the infant and high-risk children program.
- The older adult RSV program remains active into the spring, as protection lasts for several years.
- Beyfortus is no longer available for ordering and should not be administered during the spring.
- Any unused Beyfortus should remain in cold chain storage for use in the next RSV season.
Key messages for healthcare providers
Infant RSV program
- The 2024-2025 RSV Season has ended. Beyfortus (for infants and young children) or Abrysvo (for pregnant individuals) should only be administered next season at the direction of the Ministry of Health.
- Since Beyfortus and Abrysvo provide protection for approximately six months, the fall is the optimal time for administration, to ensure protection during peak RSV activity.
- Premises with unused, unopened doses must maintain cold chain storage (between +2.0°C to +8.0°C) for use in the 2025–2026 RSV season.
- Do not return Beyfortus to Public Health unless the product is expired.
Older adult RSV program
- RSV vaccine protection for older adults lasts up to three years.
- Continue to offer RSV vaccine (Abrysvo or Arexvy) to eligible older adults (external link) throughout the spring months
Key messages for patients
- Eligibility for the 2025–2026 infant and high-risk children RSV program will be shared closer to the fall.
- If you are pregnant or will have a young infant during the fall or winter months, talk to your health care provider and visit Respiratory Syncytial Virus (external link) to learn more about protecting your infant from RSV.