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Your guide on how to protect young children against RSV

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Do you have an infant or a young child at home and are wondering how to best protect them against RSV? We’ve put together a quick guide that gathers the latest NACI recommendations and more.

Check it out and share it with your parent friends who might be wondering too!

Decision Tree

  1. How old is your child?
    1. Less than 8 months – First RSV season (3)
    2. Between 8-19 months – Second RSV season (7)
    3. Older than 19 months – Third or later RSV season (2)
  2. Your child is not considered at high risk this season – No routine recommendation
  3. Does your child have a condition that increases the risk of severe RSV disease*?
    1. Yes (6)
    2. No (4)
  4. Did the pregnant parent receive RSVpreF, the vaccine against RSV, while pregnant?
    1. Yes (5)
    2. No (6)
  5. Was your child born less than 2 weeks after the pregnant parent received their RSV vaccine?
    1. Yes (6)
    2. No (2)
  6. Your child is recommended to receive monoclonal antibodies against RSV this season.
  7. Does your child have a condition that increases the risk of severe RSV disease*?
    1. Yes (6)
    2. No (2)

*Conditions increasing the risk of severe RSV disease in infants and children*:

  • Chronic lung disease, including bronchopulmonary dysplasia, requiring ongoing assisted ventilation, oxygen therapy or chronic medical therapy in the 6 months prior to the start of the RSV season 
  • Cystic fibrosis with respiratory involvement and/or growth delay 
  • Haemodynamically significant chronic cardiac disease 
  • Severe immunodeficiency 
  • Severe congenital airway anomalies impairing clearing of respiratory secretions 
  • Neuromuscular disease impairing clearing of respiratory secretions 
  • Down syndrome 
  • Premature infants less than 32 week of gestational age
Sources
  1. RSV (Respiratory syncytial virus) | Caring for kids
  2. Respiratory syncytial virus (RSV) | World Health Organization | December 2025
  3. Statement on the prevention of respiratory syncytial virus disease in infants | Government of Canada – Public Health Agency of Canada | 2024
  4. Burden of disease of RSV in infants, children and pregnant women and people | Government of Canada – Public Health Agency of Canada | January/February 2024
  5. Respiratory syncytial virus (RSV): Spread, prevention and risks | Government of Canada
  6. Updated guidance to protect infants and children from respiratory syncytial virus (RSV) disease: use of monoclonal antibodies (nirsevimab and clesrovimab) and the RSVpreF vaccine | National Advisory Committee on Immunization (NACI) | April 2026 
  7. Respiratory syncytial virus (RSV) vaccines: Canadian Immunization Guide | Government of Canada | Partial update May 2026

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