#Covid vaccine side effect statistics us full#
#Covid vaccine side effect statistics us trial#

That's why people are observed for at least 15 minutes after receiving the vaccine with epinephrine at the ready. It usually occurs soon after vaccination, and can be treated with epinephrine (as in an EpiPen). The signs are trouble breathing, swelling of the face and throat, rash, and low blood pressure. CDC estimates suggest anaphylaxis occurs in 11 cases per million doses among people receiving the Pfizer/BioNTech vaccine.

Severe allergic reactions. Rarely, a potentially life-threatening reaction called anaphylaxis may occur, most often in people known to have had severe vaccine reactions in the past.

What else should I know about possible side effects?

painful, swollen lymph nodes in the arm where the vaccine was injected.

A side effect or reaction isn't necessarily all bad, by the way it may indicate that the body is building protection against the virus.įor the four vaccines listed above, common side effects include

When side effects occur, they typically last just a few days. In large clinical trials, most side effects have been minor. (Click here for additional information on available vaccines.) What are the most common COVID vaccine side effects? Not only do these vaccines appear to lessen risk of developing COVID-19, but they also appear to lessen the risk of severe disease. This vaccine is authorized for use in the US.

#Covid vaccine side effect statistics us trial#

A Johnson and Johnson (Janssen) trial reported overall effectiveness of 66% (72% in the US) in preventing moderate to severe COVID-19.This vaccine is authorized for use in Great Britain, but not in the US.

#Covid vaccine side effect statistics us full#

An AstraZeneca/Oxford vaccine trial reported average effectiveness of 70% with full doses, but even better results (as high as 90%) with a lower dose.

A Moderna vaccine trial enrolling more than 30,000 volunteers reported an effectiveness of 94%.A Pfizer/BioNTech vaccine trial involving nearly 44,000 volunteers found vaccination to be 95% effective.That's well above the average effectiveness of the flu vaccine, for example. Overall effectiveness has been reported in the range of 70% to 95%. It's natural to wonder if brand new vaccines against a novel coronavirus, developed at unprecedented speed, are effective and safe to take.

Start here: Are these vaccines safe and effective? But while many people are scrambling to get a vaccine, others are hesitating. So, the rapid development of mRNA vaccines and other vaccines to prevent COVID-19 is welcome - some say miraculous - news. And of course, these measures don't work if they are not followed. Physical distancing, universal face coverings, and frequent handwashing are effective, but not foolproof. Children ages 12 to 15 can continue to receive this vaccine under emergency use authorization as more data is collected.Īs the pandemic rages on, it's increasingly clear that widespread vaccination is essential to help contain it. Editor's note: On August 23, 2021, the FDA granted full approval to the Pfizer/BioNTech COVID-19 vaccine for people ages 16 and older.