What parents should know about RSV

Cold and flu season can often include a spike in that other respiratory illness that may bring concern, such as RSV¹ — or respiratory syncytial virus. But now, there is extra protection for people at high risk.

The Centers for Disease Control and Prevention (CDC) recommends an RSV vaccination² for those 60 and older, as well as a monoclonal antibody injection³ called Beyfortus, to help protect babies and toddlers up to 2 years old. 

RSV can include symptoms similar to a common cold. However, the virus can develop into something more serious. RSV can infect people of all ages but is most severe for older adults and young children.⁴ The CDC states RSV causes up to 150,000 hospitalizations⁵ in older adults and up to 80,000 hospitalizations⁶ of children younger than 5. Given that there is not a good antiviral treatment for a serious RSV infection, the best course is through prevention. 

RSV symptoms may vary and typically begin four to six days after infection. The most common symptoms⁷ might include:

• Runny nose
• Low appetite
• Coughing
• Sneezing
• Fever
• Wheezing

For young infants with RSV,⁶ they might be irritable, sluggish or find it harder to breathe.

Your pediatrician will be able to figure out whether it’s a common cold, COVID-19 or RSV, if you have concerns about symptoms your child is showing. They might perform tests, like chest X-rays, to see if pneumonia has developed. 

Most cases will go away on its own in a week or two. Symptoms are typically at their worst on days three to five of infection. Only 3% of children⁸ with RSV will require a hospital stay.

If symptoms become severe, contact your pediatrician right away. This may include:⁸

• Symptoms of bronchiolitis (narrowing of small airways in the lung)⁹
• Symptoms of dehydration (only one wet diaper in 8 hours or more)
• Difficulty breathing
• Gray or blue lips, tongue or skin
•  A significant decrease in activity or alertness
  
  

Even though RSV is common, and it might seem difficult to figure out how severe it will become, there are some risk factors parents should be aware of:

• Children who are born premature or are 6 months old or younger are most at-risk for RSV complications
• Children with chronic heart or lung disease, or a weaker immune system, can also be susceptible to RSV

Vaccines that help protect against RSV for those 60 and up are the first to be licensed in the U.S. and are currently available. The vaccines work by introducing an inactive RSV protein¹⁰ into the body, where it fuses to host cells and stimulates the immune system to recognize the actual RSV virus if the body encounters it. The goal is to prevent severe illness.

The FDA approved¹¹ the Pfizer version of the vaccine for maternal use at 32 to 36 weeks of pregnancy to help prevent RSV in newborns. 

The CDC signed off on the monoclonal antibody, called nirsevimab,¹⁰ trade name Beyfortus, for all infants up to 8 months as they enter their first RSV season. The injection is also recommended for a small group of children between the ages of 8 months and 19 months, if they’re at high risk for severe illness. The drug is given in a single injection in the child’s thigh.

Beyfortus works differently than a vaccine. When you receive a vaccine, it causes your body to create antibodies to protect against the illness it’s intended for. With Beyfortus,¹⁰ a single antibody is injected into the bloodstream, so if you’re infected, the antibody will bind to it and help your body fight the infection. Again, this treatment option isn’t expected to completely prevent RSV, but to lessen symptoms and prevent severe illness. 

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RSV is typically spread through coughs and sneezes,¹² but can spread when someone touches a surface that has the virus on it and then touches their face, before washing their hands.

The following tips¹² may help reduce your family’s risk:

• Cover your coughs and sneezes with a tissue or your arm, not your hands
• Avoid close contact with others, especially those who are sick
• Wash your hands frequently
• Don’t touch your eyes, nose and mouth with unwashed hands
• Clean and disinfect frequently touched surfaces at home
• If you’re sick, stay home

“If you’re not eligible for the vaccines or monoclonal antibody, the best way to avoid transmission of RSV is washing our hands frequently with soap and water, and cleaning the surfaces small hands get to, like doorknobs and handles,” said Dr. Ravi Johar, a chief medical officer with UnitedHealthcare. “Also, wear a mask if you have any respiratory symptoms.”

With the knowledge of what RSV may look like — and how it is different from other viruses — you’ll be able to take steps to keep your child as healthy as possible all year round.

For more information, visit the CDC website.¹