Licensed practical nurse Yokasta Castro, of Warwick, R.I., draws a Moderna COVID-19 vaccine into a syringe. The vaccines have now been linked to minor changes in menstruation, but are still considered safe. Steven Senne/AP hide caption
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vaccine side effects
Fever is a possible side effect of a COVID19 vaccine. Catie Dull/NPR hide caption
It's not a known side effect, but some people are experiencing changes to their menstrual cycles after getting the COVID-19 vaccine. Reports have led some researchers to take a closer look at the possible connection. Scott Eisen/Getty Images hide caption
Why Reports Of Menstrual Changes After COVID Vaccine Are Tough To Study
Solid research has found the vaccines authorized for use against COVID-19 to be safe and effective. But some anti-vaccine activists are mischaracterizing government data to imply the jabs are dangerous. Matt Slocum/AP hide caption
Anti-Vaccine Activists Use A Federal Database To Spread Fear About COVID Vaccines
The usual side effects of the COVID-19 vaccine can range from a sore arm to flu-like symptoms. Or, if you're lucky, you won't get any side effects at all. Michele Abercrombie/NPR hide caption