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COVID-19 vaccine ‘disrupted the periods of thousands of women’



COVID-19 vaccine has the disrupted the menstrual cycle of than more than 30,000 women after getting the jab, says Dr Victoria Male, a lecturer in reproductive immunology at Imperial College London, but the changes were “short-lived”, a reproductive expert has said.

  Dr Male said most women return to normal after a single cycle and there was no evidence that vaccination affected fertility.

  She said the UK medicines regulator’s data does not support a link between period changes and COVID-19 vaccines since the number of reports is low – both in relation to the number of people vaccinated and the prevalence of menstrual disorders.    

In an opinion piece in the British Medical Journal, she said the changes were not confined to a single type of vaccine, with reports among women who had received the Pfizer, Moderna and AstraZeneca vaccines.

  If there is a link between vaccines and period disruption, she said “it is likely to be a result of the immune response to vaccination rather than a specific vaccine component”.

  She said research into this possible reaction is needed to understand why it might be happening.

  Dr Male said the reluctance of some women to get the vaccine was largely fuelled by “false claims that vaccination could harm their chances of future pregnancy”.  

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