Flu (Influenza) and the Vaccine (2024)

Flu (Influenza) and the Vaccine (1)

How to pronounce Influenza: [in-floo-en-zuh]

A yearly flu vaccine is the best way to protect your child from flu and its potentially serious complications.

Why should my child get a flu vaccine?

  • Reduces the risk of flu illness and hospitalization among children.
  • Shown to be life-saving for children.
  • Can make illness less severe among people who get vaccinated but still get sick with flu.
  • Reduces the risk of illness, which can keep your child from missing school or childcare and you from having to miss work.
  • Reduces the high risk of developing serious flu complication especially if your child is younger than 5 years, or of any age with certain chronic conditions.
  • Helps prevent spreading flu to family and friends, including babies younger than 6 months who are too young to get a flu vaccine.

When should my child get a flu vaccine?

Doctors recommend that your child get a flu vaccine every year in the fall, starting when he or she is 6 months old. Some children 6 months through 8 years of age may need 2 doses for best protection.

  • CDC recommends a flu vaccine by the end of October, before flu begins spreading in your community. Getting vaccinated later, however, can still be beneficial and vaccination should continue to be offered throughout the flu season, even into January or later.
  • Children 6 months through 8 years getting a flu vaccine for the first time, and those who have only previously gotten one dose of flu vaccine, should get two doses of vaccine. The first dose should be given as soon as vaccine becomes available.
  • If your child previously got two doses of flu vaccine (at any time), he only needs one dose of flu vaccine this season.

CDC recommends a yearly flu vaccine for everyone ages six months and older. Pregnant women should get a flu vaccine during each pregnancy. Flu vaccines given during pregnancy help protect both the mother and her baby from flu.

What vaccines protect against flu?

For the 2020-2021 flu season, CDC recommends a yearly flu vaccination for everyone 6 months and older.

  • Flu shots can be given to your child 6 months and older.
  • The nasal spray vaccine can be given to people 2 through 49 years of age. However, certain people with underlying medical conditions should not get the nasal spray vaccine.

Your child’s doctor will know which vaccines are right for your child.

Should I get vaccinated if I’m pregnant?

Yes. Changes in your immune, heart, and lung functions during pregnancy make you more likely to get seriously ill from flu. CDC recommends pregnant women get a yearly seasonal flu shot by the end of October, if possible, to ensure best protection against flu. You can be vaccinated during any trimester of your pregnancy. Getting vaccinated can also help protect your baby after birth from flu. (Mom passes antibodies onto the developing baby during her pregnancy.)

Flu vaccines are very safe.

Flu vaccines have a good safety record. Hundreds of millions of Americans have safely received flu vaccines for more than 50 years, and there has been extensive research supporting the safety of flu vaccines.

Vaccines, like any medicine, can have side effects. When they occur, flu vaccine side effects are generally mild and go away on their own within a few days.

What are the side effects?

Common side effects from the flu shot may include:

  • Soreness, redness, and/or swelling where shot was given
  • Headache
  • Fever
  • Nausea
  • Muscle aches

Side effects from the nasal spray flu vaccine may include:

  • Runny nose
  • Wheezing
  • Headache
  • Vomiting
  • Muscle aches

If these problems occur, they usually begin soon after vaccination and are mild and short-lived.

To prevent fainting and injuries related to fainting, adolescents should be seated or lying down during vaccination and remain in that position for 15 minutes after the vaccine is given.

Prepare for your child's vaccine visit and learn about how you can:

  • Research vaccines and ready your child before the visit
  • Comfort your child during the appointment
  • Care for your child after the shot

Before, During, and After Shots

Why does my child need a flu vaccine every year?

Flu viruses are constantly changing, so new vaccines are made each year to protect against the flu viruses that are likely to cause the most illness. Also, protection provided by flu vaccination wears off over time. Your child’s flu vaccine will protect against flu all season, but they will need a vaccine again next flu season for best protection against flu.

What is flu?

Flu—short for influenza—is an illness caused by influenza viruses. Flu viruses infect the nose, upper airways, throat, and lungs. Flu spreads easily and can cause serious illness, especially for young children, older people, pregnant women, and people with certain chronic conditions like asthma and diabetes.

What are the symptoms of flu?

Flu symptoms can include:

  • Fever (not everyone with flu will have a fever) or feeling feverish/chills
  • Chills
  • Cough
  • Sore throat
  • Runny or stuffy nose
  • Headache
  • Muscle or body aches
  • Tiredness
  • Vomiting and/or diarrhea (this is more common in children than adults)

Most people who get sick with flu will recover in a few days to less than two weeks.

Is flu illness serious?

Millions of children get sick with flu each year and thousands are hospitalized. CDC estimates that since 2010, between 7,000 and 28,000 children younger than 5 years old have been hospitalized for flu each year in the United States. Children with chronic conditions like asthma, diabetes, and disorders of the brain or nervous system, and children younger than 5 years old (and especially children younger than 2 years old) are more likely to end up in the hospital from flu.

Some people at high risk can develop complications (such as pneumonia) that can result in hospitalization and even death.

Flu seasons vary in how serious they are from one season to another. Since 2010, CDC estimates that between 130 and 1,200 children (younger than 18 years) have died from flu each year.

How does flu spread?

Flu spreads mainly by droplets when people who have flu talk, cough, or sneeze, and these droplets land in the mouths or noses of people who are nearby or are inhaled. Less often, a person might get flu by touching a surface or object that has flu virus on it and then touching their own mouth, nose, or possibly their eyes.

People can spread flu to others from one day before they have symptoms to 5-7 days after they get sick. This can be longer in children and people who are very sick.

Can my child get flu from a flu vaccine?

No, flu vaccines do not cause flu. Flu vaccines (given as a shot) are currently made in two ways: the vaccine is made either with

  1. flu viruses that have been ‘inactivated’ (killed) and are therefore not infectious, or
  2. using only a single gene from a flu virus (as opposed to the full virus) in order to produce an immune response without causing infection.

Flu vaccine protects your child from flu illness. However, flu shots can sometimes cause mild side effects that may be mistaken for flu. Keep in mind that it will take about 2 weeks after getting a vaccine for your child to build protection against flu.

Follow the vaccine schedule

The Centers for Disease Control and Prevention, American Academy of Family Physicians, and American Academy of Pediatrics strongly recommend children receive all vaccines according to the recommended vaccine schedule.

Birth - 6 years schedule

7 - 18 years schedule

Flu (Influenza) and the Vaccine (2024)

FAQs

Flu (Influenza) and the Vaccine? ›

Everyone 6 months of age and older is recommended to get an annual influenza vaccine, including even healthy adults. Vaccination is especially important for people at higher risk of serious influenza complications or people who live with or care for people at higher risk for serious influenza complications.

Does the flu shot protect against influenza A? ›

There are also some flu vaccines that protect against three different flu viruses (“trivalent”); an influenza A (H1N1) virus, an influenza A (H3N2) virus, and one influenza B virus. Two of the trivalent vaccines are designed specifically for people 65 and older to create a stronger immune response.

At what age is the influenza vaccine given? ›

Each year the Centers for Disease Control and Prevention (CDC) recommends an influenza vaccine. The CDC suggests that all children age 6 months and older in the United States get the vaccine by the end of October. It takes up to two weeks after vaccination to be protected from the flu.

How long is influenza contagious? ›

Period of Contagiousness

People with flu are most contagious during the first 3 days of their illness. Some otherwise healthy adults may be able to infect others beginning one day before symptoms develop and up to five to seven days after becoming sick.

How long does influenza last? ›

Most symptoms go away in 4 to 7 days. The cough and tired feeling may last for weeks. Sometimes, the fever comes back. Some people may not feel like eating.

How long are you immune from influenza A after having it? ›

Influenza virus-specific hemagglutination inhibition antibodies persist up to 18 months following infection and vaccination.

When is it too late to take Tamiflu? ›

To treat the flu, you'll start Tamiflu if you've had symptoms for 48 hours or less. To help prevent the flu, you'll start Tamiflu within 48 hours of close contact with someone who has the flu. If you start Tamiflu after 48 hours, it's not likely to work to help prevent or treat the flu.

What are valid reasons to decline the flu shot? ›

6 reasons patients avoid flu vaccination
  • I'm healthy, so I don't need a flu vaccine. I'm healthy, so I don't need a flu vaccine. ...
  • The flu vaccine isn't safe and can give me the flu. ...
  • It is better to get sick with the flu. ...
  • I'll wait until flu hits my area. ...
  • I hate getting injections. ...
  • I was vaccinated last year.

Should you get a flu shot if you've been exposed to the flu? ›

If you're exposed to the influenza virus shortly before or during that time period, you might catch the flu. Mismatched flu viruses. In some years, the influenza viruses used for the vaccine don't match the viruses spreading during the flu season. If this occurs, your flu shot will be less effective.

How long does a flu shot take to kick in? ›

It takes about two weeks after the vaccination for antibodies to develop in the body and provide protection against the influenza viruses. In the meantime, people are still at risk for getting the flu. That's why it's better to get vaccinated early in the fall, before the flu season really gets under way.

Is flu A or B worse? ›

Type A influenza is generally considered worse than type B influenza. This is because the symptoms are often more severe in type A influenza than in type B influenza. Type A influenza is more common than type B influenza. Researchers suggest that most adults have considerable immunity against type B influenza.

What day is the flu the worst? ›

Flu symptoms usually peak and are at their worst on days 2 and 3. You may not feel well enough to get out of bed and should stay home from work or school to recover and avoid spreading the virus to others. Common flu symptoms you may experience during this time are: Fever and chills.

What is the fastest way to cure influenza? ›

Usually, you'll need nothing more than rest and plenty of fluids to treat the flu. But if you have a severe infection or are at higher risk of complications, your healthcare professional may prescribe an antiviral medicine to treat the flu.

Can you be around someone with the flu and not get it? ›

Even if you try your best to stay healthy when someone in the house has the flu, there's still a chance that you'll become infected. The flu causes symptoms that range from mild to severe, and if you live with certain medical conditions such as heart disease, getting the flu can increase your risk of complications.

What is the best treatment for influenza? ›

Antiviral drugs can help treat flu illness: Antiviral drugs are different from antibiotics. Flu antivirals are prescription medicines (pills, liquid, intravenous solution, or an inhaled powder) and are not available over the counter. Antiviral drugs can make illness milder and shorten the time you are sick.

What strains of flu does the flu shot cover? ›

All current U.S. flu vaccines protect against a flu A(H1) virus, a flu A(H3) virus, a flu B/Yamagata lineage virus and a flu B/Victoria lineage virus.

Can you vaccinate against influenza? ›

The flu vaccine helps protect against flu, which can be a serious or life-threatening illness. It's offered on the NHS every year in autumn or early winter to people at higher risk of getting seriously ill from flu.

Whats the difference between flu A and B? ›

The flu is caused by different strains of the influenza virus. Type A flu viruses are present in animals (such as birds and pigs) in addition to humans, while type B flu viruses only circulate in humans. Flu A viruses mutate (change genetically) more frequently than flu B.

How long does flu shot immunity last? ›

Yes, the flu shot wears off in about six months. The flu shot does not provide long-lasting protection, which is another reason we need to get one every year. When should I get a flu shot? We typically suggest getting the flu shot in the early fall, before the virus starts circulating in the community.

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