Are You Savvy About Viruses?

In Ontario, the recent introduction of new vaccines for respiratory syncytial virus (RSV) has brought a significant advancement in public health, particularly for vulnerable populations like babies and seniors. RSV is a highly contagious virus that can cause severe respiratory illness, especially in young children and older adults. It is a leading cause of bronchiolitis and pneumonia in infants, and a major concern for elderly individuals with compromised immune systems.

Infant RSV

For infants, one of the most important recent developments is the approval of a new monoclonal antibody called nirsevimab. This injection helps prevent severe RSV infections in babies born during or after the RSV season, which typically spans from fall to spring. Nirsevimab works by providing immediate passive immunity—delivering antibodies directly into the bloodstream to protect babies from RSV infection. Unlike older RSV vaccines, which required multiple doses, nirsevimab only requires a single dose and is expected to offer protection for the entire RSV season. The Ontario Ministry of Health recommends nirsevimab for infants born prematurely or those with certain medical conditions, including chronic lung disease or congenital heart disease. This vaccination strategy is expected to significantly reduce hospitalizations and severe outcomes related to RSV in the youngest and most vulnerable population. The new RSV vaccine will be offered in the newborn nursery to babies when they are born. Your primary care provider may also have it for babies under two.

Senior RSV

For seniors, another promising development is the approval of an RSV vaccine designed to reduce the risk of severe disease in older adults, particularly those aged 60 and over. RSV can cause serious complications in seniors, including pneumonia, which can lead to hospitalization and even death. The new vaccine, Arexvy, is designed to boost the immune response in older adults, offering greater protection during RSV season. The vaccine is part of Ontario’s broader strategy to protect seniors, alongside other age-related vaccines like those for flu and pneumonia. The Ontario government has made RSV vaccines available to high-risk seniors through public health programs, aiming to prevent severe RSV cases during peak seasons.

Together, these new RSV vaccines are a great tool to help us protect our most vulnerable populations.

 

Dr. Bhooma Bhayana is a family physician in London and the mother of two young men and proud grandmother of three! She continues to find wonder and enjoyment in family practice despite more than 30 years on the job!