RSV FAQ

12/09/2025

What is RSV?

Respiratory Syncytial Virus (RSV) is a common virus that affects the lungs and breathing passages. RSV is the leading cause of infant hospitalization in the U.S., and nearly every child will get RSV by age 2.  [www.cdc.gov]

Who is at greatest risk for severe RSV?

  • Infants and young children (the younger the age, the higher the risk)
  • American Indian and Alaska Native children
  • Children born prematurely
  • Children with chronic lung or heart disease
  • Children with weakened immune systems
  • Children with severe cystic fibrosis
  • Children with neuromuscular disorders [www.cdc.gov]

 

What are the symptoms of RSV?

  1. Early symptoms may include:
  • Runny nose
  • Eating or drinking less
  • Cough (may progress to wheezing or difficulty breathing)

In very young infants (less than 6 months), symptoms may include:

  • Irritability
  • Decreased activity
  • Eating or drinking less
  • Apnea (pauses in breathing for more than 10 seconds)
  • Many infants will not have a fever with RSV infection [www.cdc.gov]

 

When should I seek emergency care?

Seek medical attention if your child is having difficulty breathing, not drinking enough fluids, or experiencing worsening symptoms.

How can I protect my baby from severe RSV?
There are two main options:

  1. RSV vaccine during pregnancy:
    • Given between 32–36 weeks of pregnancy (usually September–January)
    • Passes protection to the baby before birth
  2. RSV antibody for babies:
    • Given directly to babies younger than 8 months (usually October–March)
    • Also recommended for some children ages 8–19 months entering their second RSV season, especially those with certain health conditions [www.cdc.gov]

Does my baby need both the vaccine and the antibody?

Most babies only need one form of protection. Your healthcare provider can help determine which is best for your child.

 

What else can I do to reduce RSV risk?

  • Wash hands often
  • Limit close contact with sick people
  • Clean toys and surfaces regularly
  • Avoid smoke exposure
  • Keep babies away from crowded places during RSV season when possible [pedspandem...etwork.org]

 

Where can I learn more?

Visit the CDC’s RSV in Infants and Young Children page for more information.