The risk of having a serious adverse reaction to the COVID-19 vaccine is very low—far lower than the risk of contracting COVID-19.
Severe adverse reactions after vaccination are extremely rare but can cause long-term health issues. Rare adverse events have been identified and investigated through the Vaccine Adverse Event Reporting System (VAERS).
Side effects of the COVID-19 vaccines vary from person to person. They are typically mild and subside in a few days. Common side effects include soreness and swelling in the injection site, nausea, chills, fatigue, headaches, muscle pain, or fever.
Updated October 29, 2024
