uM study Funded by the National Institutes of Health, which surveyed 20,000 people from Canada, the United Kingdom and the United States to understand the relationship between the Covid-19 vaccine and menstruation, it notes that there are “small changes” in the menstrual cycle after menstruation. vaccination.
“These findings provide additional information to guide women about what to expect after vaccination,” the investigators say.
In addition to the Covid-19 messenger RNA vaccines (Pfizer-BioNTech, Moderna), the participants were vaccinated with Covid-19 vaccines made with modified viruses (AstraZeneca, Covishield, Janssen/Johnson & Johnson, and Sputnik) and inactivated viruses (Covaxin and Sinopharm). and Sinovac). It was found that, on average, vaccinated women had an increase of less than one day in each vaccinated cycle: an increase of 0.71 days after the first dose and an increase of 0.56 days after the second.
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Participants who received both doses in one cycle had a 3.91-day increase in duration. After vaccination, cycle duration increased by only 0.02 days for participants who received one dose per cycle and 0.85 days for subjects who received two doses in one cycle, compared to participants who were not vaccinated. Changes in cycle length did not change according to the type of vaccine received.
Of the total, 1,342 participants had a change in cycle length of eight days or more, including 6.2% of the vaccinated and 5.0% of the non-vaccinated. Younger women with longer cycles before vaccination have the largest increase in menstruation.
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What to do if you have symptoms of Covid-19:
Keep calm and avoid going to hospitals. Stay home and call SNS 24 (808 24 24 24). Choose Option 1 (for other symptoms, you should choose Option 2) or 112 if it is a medical emergency. Follow all instructions given, avoid approaching people, and keep a distance of at least two metres.
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