Most RSV infections in babies are treated at home with supportive care, not medication. There is no antiviral drug that cures RSV, so treatment focuses on keeping your baby comfortable, hydrated, and breathing as easily as possible while the virus runs its course. Symptoms typically last 1 to 2 weeks, with days 3 through 5 often being the worst.
What Home Care Actually Looks Like
The core of RSV treatment is simple: clear the nose, push fluids, and manage fever. Babies are obligate nose breathers, meaning they rely almost entirely on their nostrils to breathe. When mucus blocks those tiny airways, feeding and sleeping become a struggle. Use saline drops followed by a bulb syringe or nasal aspirator to suction mucus before feedings and before sleep. You may need to do this frequently throughout the day.
Keep your baby well hydrated by offering breast milk or formula in smaller, more frequent feedings. A congested baby tires quickly during feeds, so shorter sessions every couple of hours work better than trying to get a full feeding in one sitting. If your baby is producing tears when crying and wetting diapers regularly (at least one wet diaper every 8 hours for the sickest babies, ideally more), hydration is likely adequate.
A cool mist humidifier in your baby’s room adds moisture to the air, which helps loosen congestion and calm coughing. The American Academy of Pediatrics recommends cool mist over warm steam vaporizers because vaporizers pose a burn risk if a child gets too close or knocks the device over. Clean the humidifier daily to prevent mold growth.
For fever, acetaminophen can be given to babies 3 months and older. Ibuprofen is only appropriate for babies 6 months and older. Both are dosed by weight, not age, so check with your pediatrician or the product’s weight-based dosing chart. Acetaminophen can be given every 4 to 6 hours (no more than 5 doses in 24 hours), while ibuprofen can be given every 6 to 8 hours (no more than 4 doses per day). Never give aspirin to a baby or child.
Medications That Don’t Work for RSV
Parents sometimes wonder why the doctor won’t prescribe an inhaler or steroids. The American Academy of Pediatrics specifically recommends against both for bronchiolitis, which is the lower respiratory infection RSV commonly causes in babies.
Albuterol, the bronchodilator used in asthma inhalers, has been studied extensively in babies with bronchiolitis. Multiple large reviews found it does not reduce hospitalization rates, shorten illness duration, or improve meaningful outcomes. It may slightly change clinical symptom scores in the moment, but those scores don’t reliably reflect actual improvement. Meanwhile, it can cause a rapid heart rate and tremors in infants.
Oral steroids fare no better. Large trials and systematic reviews consistently show corticosteroids do not reduce hospital admissions or shorten hospital stays for babies with bronchiolitis. They may actually prolong how long the baby sheds the virus. Over-the-counter cough and cold medicines are also unsafe for infants and should never be given.
Signs Your Baby Needs Emergency Care
RSV can progress from a simple cold to serious breathing difficulty, sometimes within hours. Knowing what to watch for matters more than any home remedy. Look at your baby’s chest and breathing pattern:
- Retractions: The skin pulls inward just below the neck or under the breastbone with each breath. This means your baby is working much harder than normal to pull air into the lungs.
- Nasal flaring: The nostrils spread wide open with each breath, another sign of increased effort.
- Grunting: A short sound at the end of each exhale. This is the body’s attempt to keep the lungs inflated and open.
- Fast breathing: More than 60 breaths per minute in a baby under 2 months, or more than 50 per minute in older infants.
- Color changes: Bluish or grayish skin around the lips, fingernails, or tongue signals low oxygen.
If your baby stops eating altogether, becomes unusually difficult to wake, or shows any of the signs above, go to the emergency room. Babies under 3 months, premature infants, and those with heart or lung conditions are at the highest risk for severe disease.
What Happens in the Hospital
About 1 to 3 percent of babies with RSV end up hospitalized, most commonly between 1 and 6 months of age. Hospital treatment is still supportive, just at a higher level of intensity. The three main interventions are supplemental oxygen delivered through small nasal prongs, IV fluids for babies who can’t take enough by mouth, and in severe cases, mechanical ventilation to assist breathing.
Most hospitalized babies stay for 3 to 5 days. The medical team monitors oxygen levels continuously and suctions the airways more aggressively than you can at home. Once a baby can maintain normal oxygen levels on room air and feed well enough to stay hydrated, they’re typically discharged.
How Long RSV Lasts
RSV usually starts with cold-like symptoms: runny nose, mild cough, and possibly a low fever. Over the next few days, the cough can deepen, and in some babies the infection moves into the smaller airways of the lungs, causing wheezing and labored breathing. Symptoms generally peak around days 3 to 5 of illness and then slowly improve. The cough can linger for 2 to 3 weeks even after the worst is over.
During the peak days, your baby may eat less, sleep poorly, and be noticeably fussy. This is normal. What you’re watching for is the difference between a miserable baby who is still eating and breathing adequately versus one who is truly struggling to breathe or refusing all fluids.
Prevention for Current and Future Seasons
If your baby hasn’t had RSV yet, there are now two ways to reduce the chances of a severe infection. One is a preventive antibody called nirsevimab (brand name Beyfortus), recommended for all babies younger than 8 months entering their first RSV season if the mother did not receive an RSV vaccine during pregnancy. It’s given as a single injection, typically between October and March in most of the United States. Babies born during that window should ideally receive it within the first week of life, during their birth hospitalization.
Some higher-risk children between 8 and 19 months qualify for a dose before their second RSV season. This includes children with chronic lung disease of prematurity, severe immune deficiency, cystic fibrosis with significant lung involvement, and American Indian or Alaska Native children.
The second option is maternal vaccination. A vaccine given to pregnant women between 32 and 36 weeks of gestation passes protective antibodies to the baby before birth. In clinical trials, this reduced the risk of RSV hospitalization in the newborn by 68% in the first three months of life and by 57% through six months. Protection against the most severe outcomes, including ICU admission and need for mechanical ventilation, was even stronger: 82% in the first three months. The maternal vaccine and the infant antibody are not typically given together, so your OB and pediatrician will coordinate which approach makes sense for your timing.