“Overall, severe allergic reactions to COVID-19 mRNA vaccines, including life-threatening anaphylaxis reactions such as low blood pressure and difficulty breathing, are rare, on the order of five cases per million vaccine doses administered,” noted Dr. Guerrerio.
Serious side effects that could cause a long-term health problem are extremely unusual following any vaccination, including COVID-19 vaccination. The benefits of COVID-19 vaccination outweigh the known and potential risks.
If you experienced side effects when you were vaccinated initially, you may wonder if you'll have any noticeable symptoms in response to your booster shot. While you may have some side effects, they should be no worse than what you experienced originally and may well be milder.
Key Takeaways. Among 52,805 health care employees who received mRNA COVID-19 vaccines, 2% experienced allergic reactions, and anaphylaxis occurred at a rate of 2.47 per 10,000 individuals.
Monitoring of the Moderna COVID-19 vaccine has found 10 cases of anaphylaxis after the administration of 4,041,396 first doses of the Moderna COVID-19 vaccine. In 9 out of these 10 cases of anaphylaxis, the recipient of the vaccine had onset of symptoms within 30 min of administration.
The known risks of COVID-19 illness and its related, possibly severe complications, such as long-term health problems, hospitalization and even death, far outweigh the potential risks of having a rare adverse reaction to vaccination like myocarditis or blood clots.
Approximately one in four COVID-19 patients have lingering symptoms, even after recovering from the virus.
This is normal and expected, but it doesn't happen to everyone. Even if you feel worse after the second shot, the side effects should still resolve within a few days.
All people ages 12 years and older should receive 1 booster dose of a COVID-19 vaccine after completion of the primary series (Table 2), even if they were younger than age 12 years at the time of the primary series. Some adults may receive a second booster dose.