A retrospective case-control study on menstrual cycle changes following COVID-19 vaccination and disease

Alexandra Alvergne, Gabriella Kountourides, M. Austin Argentieri, Lisa Agyen, Natalie Rogers, Dawn Knight, Gemma C Sharp, Jacqueline A Maybin, Zuzanna Olszewska

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

There has been increasing public concern that COVID-19 vaccination causes menstrual disturbance regarding the relative effect of vaccination compared to SARS-CoV-2 infection. Our objectives were to test potential risk factors for reporting menstrual cycle changes following COVID-19 vaccination and to compare menstrual parameters following COVID-19 vaccination and COVID-19 disease. We performed a secondary analysis of a retrospective online survey conducted in the UK in March 2021. In pre-menopausal vaccinated participants (n = 4,989), 18% reported menstrual cycle changes after their first COVID-19 vaccine injection. The prevalence of reporting any menstrual changes was higher for women who smoke, have a history of COVID-19 disease, or are not using estradiol-containing contraceptives. In a second sample including both vaccinated and unvaccinated participants (n = 12,579), COVID-19 vaccination alone was not associated with abnormal menstrual cycle parameters, while a history of COVID-19 disease was associated with an increased risk of reporting heavier bleeding, "missed" periods, and inter-menstrual bleeding.

Original languageEnglish
Article number106401
Pages (from-to)106401
JournaliScience
Volume26
Issue number4
Early online date15 Mar 2023
DOIs
Publication statusPublished - 21 Apr 2023

Keywords / Materials (for Non-textual outputs)

  • Health sciences
  • Immunology
  • Public health
  • Women's health

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