Fast-acting protection against serious RSV lung infection for babies
What parents need to know about Beyfortus® (nirsevimab-alip)
50 mg and 100 mg injection
Beyfortus can help prevent serious lung infections, like pneumonia caused by RSV, in babies under 1 year of age born during or entering their first RSV season.
Reduced chance of needing medical care due to RSV
Demonstrated safety and efficacy in babies under age 1
A breakthrough decades in the making
How Beyfortus works
Beyfortus is a preventative antibody that gives babies the protection against RSV they lack. Antibodies are made naturally by our immune system to fight viruses. But a baby’s immune system might not be strong enough by itself to make enough antibodies to fight RSV. This is where preventative antibodies can add more protection. Beyfortus may not protect all children.
Your baby gets Beyfortus
Depending on when they're born, your baby will receive Beyfortus at birth or at a regular checkup during or entering their first RSV season.
A boosted immune system
Beyfortus gives your baby the antibodies they lack while their immune system is maturing.
An extra layer of protection
If your baby comes into contact with RSV, the preventative antibodies in Beyfortus stick to the surface of the virus to help prevent it from infecting the lungs.
When can my baby get Beyfortus?
If your baby is born during RSV season (fall through spring)
- Beyfortus should be given at birth.
- If not given in the hospital, they should receive it at their first doctor’s visit.
If your baby is born in the
spring or summer
- Your baby can get Beyfortus at a regular checkup, typically just before RSV season.
- They can get their injection at the same time as other routine childhood vaccines.
How you can take action today
Learn more about RSV
Discover helpful tips for every parent
Additional questions you may have about Beyfortus
Still have questions?