What are the side effects of the vaccines?

Most people who received the vaccines in clinical trials experienced mild to moderate side effects that typically went away on their own after a few days. The most commonly reported side effects for the Pfizer and Moderna COVID-19 vaccines are pain, swelling, and redness at the injection site, pain, tenderness and swelling of the lymph nodes in the same arm of the injection, fatigue, headache, muscle pain, chills, joint pain, nausea/vomiting, and fever for a few days after receiving the vaccine, with more pronounced discomfort after the second dose. The frequency and severity of side effects may vary between the two vaccines. Different people may experience different side effects, even if they receive the same vaccine.  The process of building immunity can cause symptoms. These symptoms are normal and show that your body’s immune system is responding to a vaccine. Other routine vaccines, like the flu vaccine, have similar side effects. If you experience discomfort after the first dose of the vaccine, it is very important that you still receive the second dose a few weeks later for full protection. For in-depth information about the side effects of the vaccines, see the CDC’s report on the Pfizer vaccine and the Moderna vaccine.

See More Questions...