Vaccine Central

CDC lists side effects of COVID-19 booster shot

INDIANAPOLIS (WISH) — Some were hit hard with COVID-19 vaccine side effects the first time. Others, not so much. And now — for some — it’s booster time. So, what can people expect after that next jab to the arm? 

According to the Centers for Disease Control and Prevention, side effects typically resemble those of the second dose of Pfizer or Moderna or after the first dose of Johnson and Johnson. 

The most common side effects are mild and can include fever, headache, chills, fatigue and pain at injection site. 

However — while rare — others may experience more serious reactions. To date, there are only two.

The first is anaphylaxis, which is a severe allergic reaction that can occur within seconds after a vaccine. If not treated quickly it can result in unconsciousness or death. 

The second is thrombosis with thrombocytopenia syndrome, or TTS, which is the formation of blood clots combined with low platelets. 

Both are more common with the Johnson and Johnson vaccine.

While these side effects are possible, the agency says they are rare. The benefits of the COVID-19 booster far outweigh the risks. 

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