What is the new RSV vaccine Beyfortus?
RSV Immunization for Children 19 months and Younger
Nirsevimab (Beyfortus) is an immunization recommended for all infants younger than 8 months of age who are born during—or who are entering—their first Respiratory Syncytial Virus (RSV) season. Except in rare circumstances, most infants younger than 8 months of age do not need nirsevimab if they were born 14 or more days after their mother got RSV vaccine. Nirsevimab is also recommended for some children age 8 through 19 months who are at increased risk for severe RSV disease and entering their second RSV season.
What is the RSV vaccine Beyfortus?
Beyfortus is not technically a vaccine, as it does not cause the body to make its own antibodies against RSV. Rather, it provides a dose of pre-made antibodies that provide “passive immunity” for at least 5 months. It has been shown to reduce the risk of serious RSV disease by 80%.
Who can get Beyfortus?
All babies born after March 1, 2023 are eligible this year. Newborns should ideally receive it in their first week of life. If a mother received the maternal RSV vaccine (Abrysvo) at least 14 days before the baby was born, the child is protected and will not need Beyfortus. High risk patients in their second RSV season may be eligible, which will be determined by your child’s provider.
What are the side effects of Beyfortus?
- Pain
- Redness, or swelling at the injection site
- Mild rash
- These were the most common side effects during clinical trials
My baby already had RSV this season, can they get Beyfortus?
Yes! Natural immunity from having RSV may last about 2 months, but the RSV season is much longer than that and infants can be reinfected with other strains of the virus. If they are eligible, it’s recommended that they get Beyfortus.
Can my infant get Beyfortus with other routine childhood vaccines?
Yes, it can be given at their checkup along with other vaccines. In clinical trials it was not shown to interfere with the body’s immune response to other routine vaccines.
How long does it take to start working?
It takes about 6 days to have full effect. The effect is strongest in the first several weeks and wanes over time.
How Do I Pay for Nirsevimab?
Vaccines for Children (VFC) program
Nirsevimab will be covered by VFC, a federally funded program that provides vaccines at no cost to children who might not otherwise be vaccinated because of inability to pay. Children younger than 19 years of age are eligible for the VFC Program if they belong to one or more of the following groups:
- Medicaid-eligible
- Uninsured
- Underinsured
- American Indian or Alaska Native
Private health insurance. Many private health insurance plans cover nirsevimab, but there may be a cost to you depending on your plan. Contact your insurer to find out.
