11/27/2025
RSV vaccine… what exactly is it?!
When we use the term “vaccine”, we usually think our body is going to respond to it by making antibodies that last for a while. But not all shots do this!
The RSV shot for infants (Beyfortus) doesn’t confer any life-long immunity, just protects your kid for a few months during season (5 months in studies). It doesn’t work like a “vaccine” which stimulates the immune system to make its own antibodies (which usually last a lot longer). It is a lab-made version of antibodies to a specific RSV protein that, over time, the body identifies as foreign (i.e. not self made) and destroys.
Adult vaccines, unlike the kiddo shots, do stimulate the immune system to make antibodies, making them last longer.
RSV is super contagious and like any virus, can move into the lungs causing serious complications. We’re already seeing it locally. If you’re worried your kiddo may have RSV- see your pediatrician! Members- shoot me a text 😊