These may include headache, muscle aches, chills, and feeling fatigued.
it’s possible for you to still get the flu after vaccination against it.
You may have also had a weak immune response to the vaccine or be sick with something else entirely.
Verywell / Joshua Seong
This article explores the reasons why you may get sick after the flu shot.
Fever is more common in children than adults.
Serious allergic reactions are thought to occur only 1.3 times for every 1 million vaccines given.
After you have recovered, you should report the reaction to theVaccine Adverse Event Reporting System (VAERS).
How Effective Is the Flu Shot?
The flu shot’s effectiveness varies from season to season.
This number will be lower in years when the vaccine is not well-matched to the dominant flu strains.
Why Can You Still Get the Flu After a Flu Shot?
There are many reasons why this might happen.
Immunity is how well your body is able to fight off illnesses.
These strains are selected by researchers based on the likelihood of their prevalence in the upcoming season.
Because the flu virusmutates, or changes, new vaccines have to be made every flu season.
Despite their best educated guesses, researchers and public health officials may get it wrong.
It is also possible that you contracted an illness other than the flu.
Vaccinated individuals who do get sick typically have less severe symptoms and complications.
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