Does My Child Really Need a Flu Shot?
What Parents Should Know
Every fall, one of the most common questions we hear in the office is some version of: “Does my child really need a flu vaccine this year?”
Our answer, from all of us on the pediatric team, is a clear yes — for nearly every child 6 months and older — and the best time to do it is right now, before flu starts spreading widely in our community.
Here’s why we feel so strongly about it, and what you need to know to protect your family this flu season.
Why is the flu more serious for kids than many parents realize?
It’s easy to think of the flu as “just a bad cold.” But influenza is a different illness. For young children especially, it can become serious quickly.
- Children under 5 — and especially babies under 2 — are among those most likely to be hospitalized from the flu.
- Kids with asthma, diabetes, heart conditions, neurologic conditions, or weakened immune systems are at even higher risk of complications.
- Even previously healthy children can become severely ill from influenza.
Most children who die from flu are not fully vaccinated. Flu vaccination has also been shown to significantly reduce a child’s risk of dying from influenza.
The flu spreads easily through classrooms, daycares, and households. Children can be very effective at spreading influenza to others — which means vaccinating your child helps protect not just them, but also baby siblings who are too young to be vaccinated, grandparents, and family members with health conditions.
What does the flu vaccine actually do?
No vaccine is perfect, and we’re always honest with families about that. The flu vaccine won’t guarantee that your child never catches influenza. But it does a lot of good.
- In seasons when the vaccine is well matched to circulating flu viruses, vaccination can reduce the risk of needing medical care for flu by about 40–60%.
- Vaccination reduces the risk of severe influenza and hospitalization.
- Most importantly, it helps protect children against the serious complications of influenza that worry us most, including ICU admission and death.
In other words, the flu vaccine isn’t just about preventing your child from ever getting sick. It’s also about keeping a potentially bad illness from becoming a dangerous one.
When should my child get a flu vaccine?
This is the part we really want parents to hear. The flu vaccine isn’t something to put on the back burner until someone in the house gets sick.
- It takes about two weeks after vaccination for the body to build up protection.
- Flu can begin circulating in the fall and may increase significantly before or during the holidays.
- Ideally, children should be protected before influenza becomes widespread in the community.
The American Academy of Pediatrics recommends that most children receive their flu vaccine by the end of October.
If it’s already later in the season, though, don’t skip it. A flu vaccine in November, December, January, or even later can still be worthwhile because influenza often continues circulating well into the spring.
The one thing we’d gently discourage is waiting “just a little longer.” Every year, we see families who meant to come in, got busy, and then flu reached the house first.
Getting it done now takes that worry off your plate.
Does my child need one flu vaccine dose or two?
Most children need just one flu vaccine each year. However, some younger children need two doses.
Children 6 months through 8 years old may need two doses this season if they have not previously received at least two doses of flu vaccine before July 1, 2026, or if their vaccination history is unknown.
When two doses are needed, they should be given at least 4 weeks apart.
That’s another reason starting early matters — it gives younger children who need two doses enough time to receive both before flu season ramps up.
Children 9 years and older need only one dose each season.
If you’re not sure which applies to your child, don’t worry about figuring it out yourself. That’s exactly what we’re here for — just ask us and we can review your child’s vaccine history.
Who should get a flu vaccine?
The simple answer: nearly everyone in the family who is 6 months of age or older.
That includes:
- All children 6 months and older, with very few exceptions.
- Pregnant parents. Vaccination during pregnancy also helps protect babies during their first months of life.
- Parents, grandparents, siblings, and caregivers — especially anyone who spends time around infants who are too young to be vaccinated.
Babies under 6 months can’t receive a flu vaccine yet. Vaccinating the people around them helps reduce the chance that influenza reaches them in the first place.
Shot or nasal spray? What about FluMist?
For many children, there are actually two ways to receive a flu vaccine: the traditional flu shot or the FluMist nasal spray vaccine.
FluMist is sprayed into the nose instead of being given with a needle. It is an option for many healthy, nonpregnant children and adults ages 2 through 49 years.
Unlike the flu shot, FluMist is a live attenuated influenza vaccine, which means it contains weakened influenza viruses designed to stimulate an immune response without causing influenza illness.
FluMist isn’t the right choice for every child. For example, it may not be recommended for some children with certain medical conditions, weakened immune systems, or a history of wheezing or asthma at certain ages. Your pediatrician can help determine whether the nasal spray or the flu shot is the better choice for your child.
For children who are eligible for either one, the most important thing is not which form they receive — it’s that they get vaccinated.
Is the flu vaccine safe for children?
Yes. Flu vaccines have an excellent safety record and have been given to children for decades.
With the flu shot, the most common side effects are mild and short-lived — usually a sore arm and, occasionally, a low fever, tiredness, or fussiness for a day or two.
FluMist can cause temporary symptoms such as a runny or stuffy nose, headache, or mild fever.
Serious reactions to either vaccine are rare.
Can the flu vaccine give my child the flu?
No. Neither the flu shot nor FluMist can give your child influenza.
The injectable flu vaccine does not contain live influenza virus capable of causing flu.
FluMist does contain weakened live influenza viruses, but they are designed to reproduce in the cooler environment of the nose and do not cause influenza illness.
Some children may have mild symptoms after vaccination as their immune system responds. With the shot, that might include soreness or a low-grade fever. After FluMist, a child may have a runny or stuffy nose or other mild symptoms. These side effects are not influenza.
It’s also possible for a child to become infected with influenza shortly before vaccination or during the roughly two weeks it takes to develop protection. That can sometimes lead families to think the vaccine caused the illness when the timing was simply unfortunate.
Can children with egg allergies get a flu vaccine?
Yes.
Children with egg allergies can receive any age-appropriate flu vaccine. Special precautions beyond those normally used when giving vaccines are not needed solely because of an egg allergy.
If your child has ever had a serious reaction to a flu vaccine itself, talk with your pediatrician before vaccination.
“But my child already had the flu this year. Do they still need a flu vaccine?”
We hear this one a lot.
The first question is whether your child actually had influenza.
People often use the word “flu” to describe almost any illness with fever, cough, congestion, vomiting, diarrhea, or body aches. But many different viruses can cause those symptoms. Unless your child tested positive for influenza — or had a very typical illness during a known influenza outbreak — that illness you called “the flu” may not have been influenza at all.
But even if your child definitely had influenza, we still generally recommend vaccination.
Why? Because more than one type or strain of influenza can circulate during the same season. Infection with one influenza virus does not necessarily provide protection against the others covered by that season’s vaccine.
So whether your child had a mysterious “flu-like” illness in September or a confirmed case of influenza later in the season, don’t assume they’re protected for the rest of the winter.
Once they’ve recovered from their acute illness, ask us about getting them vaccinated.
Frequently asked questions about flu vaccines for kids
Can my child get a flu vaccine at the same time as other vaccines?
Yes. Flu vaccine can generally be given during the same visit as other recommended childhood and adolescent vaccines.
What if we don’t get the flu vaccine by the end of October?
It’s not too late.
Flu vaccination should continue throughout the season as long as influenza viruses are circulating. We’d much rather vaccinate your child later than have them miss the season entirely.
Does my child really need a flu vaccine every year?
Yes.
Protection from influenza vaccination decreases over time, and the vaccine is updated regularly to provide protection against the influenza viruses expected to circulate that season. That’s why flu vaccination is recommended every year.
Which is better for my child — FluMist or the flu shot?
For most children who are eligible for either vaccine, there isn’t one choice that every child needs to receive. Age, health history, preference, and vaccine availability can all play a role.
Some kids strongly prefer the nasal spray because there’s no needle. Others are better candidates for the traditional flu shot.
If you’re not sure, ask us. We can help you choose the appropriate option for your child.
The bottom line from your pediatric team
If there’s one preventive step we’d put near the top of your family’s fall to-do list, it’s the flu vaccine.
It’s quick, it’s safe, and it’s one of the simplest things you can do to reduce your child’s risk of serious influenza this winter. It’s also why our pediatricians make sure their own families are vaccinated each year.
Priority Care Pediatrics provides flu vaccines for children and adolescents at our pediatric offices throughout the Kansas City Northland.
Ready to check flu vaccination off your fall to-do list? Schedule your child’s flu vaccine online, call our office, or ask us to add it to an upcoming visit.
If your child needs two doses this year, now is the time to start so there’s plenty of time between doses before flu season ramps up.
