COVID-19 vaccine side effects on menstrual disturbances among Iranian women.

Background: Many studies reported of menstrual disturbances as possible side effects of COVID-19 vaccination. Our objective was to evaluate the association between vaccination and the occurrence of menstrual disturbances among Iranian women.

Methods: We used to google form questionnaires to collect reports of menstrual disturbances from 455 women aged 15-55 years in Iran.