Flu and RSV (respiratory syncytial virus) tend to circulate more heavily once the weather turns cold, and infants and young children are often among the most vulnerable. A little preparation before the season ramps up can make a real difference in how a family handles it.
Why Winter Brings More Flu and RSV
Cold, dry air helps respiratory viruses survive longer, and more time spent indoors makes it easier for germs to spread from person to person. Infants, especially those around 6 months and younger, have narrower airways and less mature immune systems, so an infection that starts as a cold can move into the lower airway and progress to bronchiolitis or pneumonia within just a few days.
Vaccination and Prevention Steps to Consider
The CDC and AAP recommend annual flu vaccination for everyone 6 months and older without a contraindication, and encourage getting vaccinated as soon as the season’s vaccine becomes available. For RSV, an infant antibody product (nirsevimab, with clesrovimab also available) is recommended for babies younger than 8 months entering their first RSV season, along with select older infants at higher risk entering a second season — a pediatrician can help sort out timing and eligibility. Frequent handwashing, keeping infants away from sick contacts when possible, and covering coughs also help lower the odds of exposure.
Caring for Mild Symptoms at Home
For mild cold-like symptoms, saline drops or spray with gentle suction can help clear a stuffy nose, and plenty of fluids along with rest tend to support recovery. A humidifier can ease congestion, and checking with a pediatrician about age-appropriate fever reducers is a reasonable next step if a fever develops.
When to Seek Care Right Away
Fast or labored breathing, flaring nostrils, the chest or ribs pulling in with each breath, a bluish or grayish tint to the lips or face, unusual lethargy or trouble waking, signs of dehydration (no wet diaper for eight or more hours, no tears when crying), or pauses in breathing all call for emergency care or an urgent call to the doctor right away. This information is based on U.S. (CDC/AAP) guidance; if you live elsewhere, check with a local pediatrician for country-specific recommendations. This information isn’t a diagnostic tool and doesn’t replace advice from a medical professional.