be sick.”
Some people feel unwell after vaccination.
That is different from having COVID-19.
Common reactions can include:
Pain or tenderness where the injection was given
Fatigue
Headache
Muscle aches
Joint pain
Chills
Fever
Nausea
The CDC says these reactions can occur after COVID-19 vaccination and are generally temporary.
For many people, symptoms are mild and disappear within a few days.
These reactions occur because the immune system is responding to the vaccine.
They should not automatically be interpreted as evidence that someone has contracted COVID-19.
What About Serious Vaccine