How Many Doses of Flu Vaccines Do My Kids Need?

One dose or two?

How many doses of flu vaccine will your kids need this year?
How many doses of flu vaccine will your kids under age 9 years need this year?

That’s right, some kids actually need two doses of the flu vaccine to get the best protection – a priming dose and a booster dose.

How Many Doses of Flu Vaccines Do My Kids Need?

You child might need two doses of flu vaccine, separated by at least 4 weeks, if they are 8 years old or younger and:

  1. this is the first year that they are getting a flu vaccine, or
  2. they have not received two or more total doses of flu vaccine before

That second part is a little confusing.

That’s because the two doses do not have to have been in the same season or even in consecutive seasons. As long as a child has had at least 2 or more doses of flu vaccine in the past, then they only need one dose this year.

And even if they have never had a flu vaccine before, kids who are already 9 years old, only get one dose.

“Evidence from several studies indicates that children aged 6 months through 8 years require 2 doses of influenza vaccine administered a minimum of 4 weeks apart during their first season of vaccination for optimal protection”

Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices—United States, 2018–19 Influenza Season

Why do they get 2 doses?

“The first dose “primes” the immune system; the second dose provides immune protection.”

Study Looks at Flu Vaccine Dosing in Children

Because studies show that getting 2 doses of flu vaccine like this works best!

More on Flu Vaccine Doses for Kids

 

 

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