European Medicines Agency Investigating Reports of Post-Vaccination Menstrual Changes

A health care worker prepares a dose of the Pfizer COVID-19 vaccine in Nantes, France, in a file photograph. Stephane Mahe/Reuters

The European Union’s health agency on Feb. 11 said is it investigating reports of certain COVID-19 vaccines being linked to menstrual cycle changes.

The safety committee of the European Medicines Agency (EMA) has launched “an in-depth evaluation of all available data, including reports from spontaneous reporting systems, clinical trials and the published literature.”