RSV signs & symptoms in babies
Respiratory syncytial virus (RSV) is a common and highly contagious virus that might affects the lungs, especially in young babies. Most of the time RSV will
cause a mild, cold-like illness. Even though it's the main reason babies end up in the hospital, many parents might not know its symptoms.¹
Knowing what to look for helps parents act quickly and get the right care. Getting a doctor’s help early can make a big difference in how the infection turns out.
What are the symptoms of RSV in babies and newborns?
RSV first signs and symptoms
The initial symptoms of RSV can include:
- Congestion
- Runny nose
- Irritability
- Decreased appetite
- Fever
Signs of severe RSV
- Short, shallow, and abnormally fast breathing
- A wheezing cough
- Nasal flaring
- Reduction in feeding and drinking due to breathing difficulties
- Unusual tiredness
- Developing a blue tint to their lips or fingernails
- Fever
If your baby has any of these severe symptoms, it's important to seek medical care.
How is RSV spread?
RSV is a common and highly contagious seasonal respiratory virus that spreads easily through contact with someone who is sick or infected surfaces.
It is an airborne virus usually transmitted through large droplets entering the eyes, nose, or mouth, typically through close contact or touching contaminated surfaces, such as when your baby snuggles their favorite toy.
When someone who has RSV coughs or sneezes, they can release these droplets, leading to the spread of RSV.
Learn more about how RSV spreads between newborns and babies
Frequently asked questions about RSV symptoms in babies and infants
Since most RSV cases are mild, testing is usually not required for RSV. However, depending on your baby’s medical history and the time of year, their doctor may do a nose swab or blood test to look for viruses and check white blood cell counts.
During the pediatrician's examination of your baby's lungs, the presence of RSV and bronchiolitis may be indicated by a crackling (almost crispy noise) or wheezing.
If there is an RSV infection, the cough can sound wet due to the presence of excess mucus in the airways. This can cause a rattling or gurgling sound when your baby coughs. In more severe cases, the cough may also be accompanied by difficulty breathing and wheezing, a high-pitched whistling sound that occurs when breathing.
These symptoms are indicative of a more serious infection that may require medical attention.
Right now, there is no definitive treatment routinely available for RSV. However, supportive care is available to help parents and babies through their illness. Supportive care includes:
- Nasal suction and lubrication to provide relief from nasal congestion
- Antipyretics (Medications to reduce fever)
- Supplemental hydration in the event of dehydration
- Oxygen for patients with low blood oxygen levels (hypoxia)
RSV is a highly contagious virus that can live for several hours on solid surfaces, such as tables and crib rails. The virus typically lives on soft surfaces, such as tissues and hands, for a shorter amount of time.
RSV symptoms usually have a timeline lasting an average of 7-14 days. However, some infants may experience severe illness and complications due to their developing immune systems. Most hospitalizations with RSV occur in otherwise healthy babies born at term, representing up to 75% of the hospitalizations due to RSV infections.3,5
It is important to note that all infants are at risk from RSV. RSV is a common respiratory virus that can cause mild cold-like symptoms in older children and adults, but it can be more serious in babies under one year old, especially those who are premature or have underlying health conditions.
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Discover helpful tips for every parent
Learn more about Beyfortus
Before your child receives Beyfortus, tell your healthcare provider about all of your child’s medical conditions, including if your child:
- has ever had a reaction to Beyfortus.
- has bleeding or bruising problems. If your child has a problem with bleeding or bruises easily, an injection could cause a problem.
Tell your healthcare provider about all the medicines your child takes, including prescription and over-the-counter medicines, vitamins, and herbal supplements. Your infant should not receive a medicine called palivizumab if they have already received Beyfortus in the same RSV season.
Serious allergic reactions have happened with Beyfortus. Get medical help right away if your child has any of the following signs or symptoms of a serious allergic reaction:
- swelling of the face, mouth, or tongue
- difficulty swallowing or breathing
- unresponsiveness
- bluish color of skin, lips, or under fingernails
- muscle weakness
- severe rash, hives, or itching
The most common side effects of Beyfortus include rash and pain, swelling, or hardness at the site of your child’s injection. These are not all the possible side effects of Beyfortus. Call your healthcare provider if you have questions about side effects.
Please see full Prescribing Information, including Patient Information, for more details.
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- 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.