Health

Why do some people get side effects after COVID-19 vaccines?

Why do some people get side effects after COVID-19 vaccines?

Temporary side effects including headache, fatigue and fever are signs the immune system is revving up — a normal response to vaccines. And they’re common.

“The day after getting these vaccines, I wouldn’t plan anything that was strenuous physical activity,” said Dr. Peter Marks, the U.S. Food and Drug Administration’s vaccine chief, who experienced fatigue after his first dose.

Here’s…


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