Flu and RSV Are Spiking: What Parents Need to Know This Winter

Dec 12, 2025 | Children's Health

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Louisiana often sees respiratory viruses ramp up early, and flu activity can reach high levels quickly once the season begins.

Pediatric infectious disease specialists say that when flu and RSV start circulating at the same time, as they often do in the colder months, families may notice symptoms popping up fast in young children.

At FMOL Health | Our Lady of the Lake Children’s Health, pediatric infectious disease specialist Michael Bolton, MD, says early activity is a reminder that the flu vaccine remains one of the strongest tools families have to protect against severe illness.

Circulating strains can pick up mutations over time, which can help the virus spread, but the flu vaccine continues to reduce the severity of illness and the chances of complications.

Why Flu and RSV Matter for Kids

Flu and RSV often overlap in the winter, which can make it harder for parents to know what’s going on when symptoms appear. Both viruses tend to start the same way: fever, congestion, cough and a generally “worn-down” feeling.

RSV often ramps up in late fall and early winter and can hit infants and young children especially hard, which is why many families see both viruses circulating in classrooms, daycares and playgroups at the same time.

When both viruses are active, pediatricians often see more little ones who need extra help, whether it’s managing fever, monitoring breathing or deciding if an office visit is needed. That’s why keeping a close eye on symptoms is so important.

Symptoms to Watch For

Most flu and RSV symptoms overlap, but these are the ones caregivers tend to notice first:

  • Fever
  • Cough or congestion
  • Sore throat
  • Body aches or fatigue

If your child is working harder to breathe, wheezing or not acting like themselves, contact your pediatrician right away.

Why the Flu Vaccine Still Matters

Even though no vaccine can prevent all cases, the flu shot is proven to:

  • Lower the risk of severe illness
  • Reduce the chances of hospitalization
  • Protect children with chronic conditions who are more likely to experience complications

Dr. Bolton notes that vaccination remains a core part of preventive care especially in households with young children.

When to Call Your Pediatrician

Many children with mild flu or RSV symptoms can be safely cared for at home with rest, fluids and symptom management. Reach out to your pediatrician if:

  • Symptoms worsen after three to four days
  • Fever lasts more than 72 hours
  • Breathing looks difficult or labored
  • Your child is younger than 2 and seems dehydrated or unable to stay hydrated

A relationship with your pediatrician can help you navigate flu season, understand what symptoms mean and get your child the care they need quickly.

How to Protect Your Family During Respiratory Virus Season

You can help reduce the spread of flu and RSV by:

  • Keeping kids home when they’re sick
  • Encouraging good handwashing
  • Covering coughs and sneezes
  • Cleaning high-touch surfaces
  • Getting the flu vaccine

These simple habits, especially when done consistently, make a big difference in keeping classrooms, families and communities healthier.

A strong relationship with your pediatrician is important throughout your parenting journey.  

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