Data indicate that severe side effects from the COVID-19 vaccine are very rare. Most people experience mild or no side effects.
According to the Centers for Disease Control:
JAMA researchers found that between 0.2% and 0.3% of vaccine recipients experience allergic reactions.
Science magazine reported that in rare cases, the vaccines may cause "long covid-like symptoms." How frequently these side effects occur is unclear given that such cases are difficult to diagnose and are not being publicly tracked.
Clinical trial results suggest COVID-19 vaccines are safe for people with HIV.