Beyfortus

See why more than 6 million* parents, like award-winning actress and singer/songwriter Mandy Moore, have chosen to get their babies Beyrified against RSV with Beyfortus.

Join more than 6 million moms who've had their babies Beyrified—verified they got Beyfortus—a layer of protection against serious RSV.

What is RSV?

RSV, or respiratory syncytial virus, is a common virus that spreads quickly and easily, especially during colder months. As a parent, it's important to learn about RSV and how Beyfortus can help protect your baby from severe RSV lung infection.

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RSV is the leading cause of hospitalization in babies under 1

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2 out of 3 babies will get RSV by age 1

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RSV can go from mild symptoms to hospitalization in days


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Get to know Beyfortus

Beyfortus is a preventive antibody designed to help protect babies from serious RSV lung infection. It's not a vaccine—it works by providing the antibodies that a baby's developing immune system lacks to help them fight RSV.

Beyfortus is the #1 prescribed RSV protection for babies. It's for babies entering their first RSV season and may be given in the hospital at birth or during any visit with their pediatrician. Now's a good time to explore how Beyfortus can help protect your baby this RSV season.
Learn more about Beyfortus

Is Beyfortus right for my baby?

Beyfortus is a prescription medicine used to help prevent a serious lung disease caused by Respiratory Syncytial Virus (RSV) in:
  • Newborns and babies under 1 year of age born during or entering their first RSV season
  • Children up to 24 months of age who remain at risk of severe RSV disease through their second RSV season

From pep talks to protection: iconic moms get real about RSV and Beyfortus

6 million* parents and counting know what it means to take action against RSV. Watch these 5 moms—Gaby Dalkin, Shawn Johnson East, Mandy Moore, Elaine Welteroth, and Katya Echazarreta—share why getting their babies Beyrified with Beyfortus was part of their plan to help protect their little ones.

“With Lou, we were very proactive. We talked to her pediatrician about RSV, and he was really adamant that no matter if your baby is born before or during virus season, it’s important to help protect them with Beyfortus. So, we got Lou immunized the first week of October.”
Mandy Moore

GABY: Hi, guys! Come in!

MANDY: Hi, friend! Thank you for hosting! [Hugs] Wow!

GABY: Thanks for coming!

KATYA: This place looks amazing!

GABY: Hi, how are you!

KATYA: Good!

ELAINE: Hi!

GABY: Hi!

ELAINE: Okay, this place is a vibe!

GABY: I mean I just threw everything in the laundry room, but thank you!

KATYA: It's amazing.

SHAWN: Hi!

GABY: You know that planning one of these is like solving a puzzle blindfolded. I'm so happy you guys are all here!

ALL: Wow, thank you!

ELAINE: This is gorgeous.

GABY: You're welcome.

SHAWN: And we have got so much to catch up on. Also, it smells amazing!

MANDY: Yeah, it does. And shout-out to Elaine for that teething toy link for Lou — she is loving it. And speaking of our little ones... Katya, how are you feeling going into winter virus season?

KATYA: Honestly? A little more at ease. I know some of you have been through it — RSV especially — and your stories helped so much.

SHAWN: It is no joke. As I told you all, when Jett got RSV and he ended up in the emergency room, I'll never forget the sound of him struggling to breathe. And then when Bear was born in the middle of RSV season, Andrew and I didn't hesitate, we asked our pediatrician about Beyfortus, and we talked to him about it right away.

MANDY: Both Gus and Ozzie got RSV when they were babies and we were lucky that it didn't require a hospital trip, but it still, like, really shook us.

MANDY: So, with Lou we were very proactive. We talked to her pediatrician about RSV, and he was really adamant that no matter if your baby is born before or during winter virus season, it's important to help protect them with Beyfortus. So, we got Lou immunized the first week of October.

ELAINE: Amazing.

SHAWN: And now, a little break for safety information.

MANDY: I got this one!

Beyfortus helps prevent a serious lung disease caused by RSV for babies under 1 born before or during their first RSV season, and certain kids up to 24 months.

Your child should not take Beyfortus if your child has a history of serious allergic reactions to nirsevimab- a-l-i-p or any of the ingredients in Beyfortus.

It's important to talk about it, and the common side effects, with your baby's doctor.

And now back to our regularly scheduled Moms Night!

GABY: Well done, Mandy! And I did talk to my — I mean our — pediatrician about it. I got Finn in the day after you guys were there. And I know as moms there's nothing worse than seeing our babies in pain and shot days can be the worst, but I know getting Beyfortus would ultimately be less painful than a potential trip to the hospital with RSV.

ELAINE: You guys, our baby got Beyfortus during just a regular checkup and didn't have any side effects, didn't even cry—okay? I cried, he was fine! I just wish more parents knew to ask about it and to take their questions to the doctor.

KATYA: Okay...real talk? I don't always feel like I know what I'm doing as a first-time mom. But making the decision to get Beyfortus for baby M, it just felt like a win. You all sharing the experiences seriously made the biggest difference.

SHAWN: That "Am I doing this right?" feeling never goes away. Welcome to the club.

MANDY: Which is why moms have to be there to lean on each other — especially when we're drowning in onesies and unanswered texts. No one gets it like another mom.

GABY: Let's raise a toast!

ALL: To BEYFORTUS. Before RSV!

ALL: Cheers!

SHAWN: Join us and millions of moms who know Beyfortus is the real deal, and have your baby Beyrified, too.

MANDY: Talk to your doctor.

ELAINE: Ask about it early.

KATYA: And check out more at Beyfortus.com.

*6 million is estimated based on sales data (through Oct 2024).

Support & resources

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Ready to talk to your baby's doctor? We can help.

Starting the conversation about RSV protection can feel overwhelming, but a little bit of prep can go a long way. Our doctor discussion guide includes simple, helpful questions to bring along to your baby's next pediatric visit, so you don't have to figure it out on the spot.
Get the guide

“Trying to help prevent RSV lung infection was something that we wanted to prioritize for our family.“
Laine—mom of two

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Parent support for every step

Whether you're learning about RSV for the first time or getting ready for a pediatrician visit, we're here to help. On our Parent Support page, you can sign up for personalized updates and download helpful resources—all in one place.
Explore Parent Support

Affordable RSV protection starts here

Cost shouldn't stand in the way of protecting your baby. Most private insurance plans cover Beyfortus, and it's also available through the Vaccines for Children (VFC) program. Our Cost & Coverage page can help you understand your options.

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Support, every step of the way

Sign up to get helpful tips, well-visit reminders, and resources delivered straight to your inbox or phone. From RSV protection to milestone moments, we're here to support you through your baby's first season.

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