COVID-19 vaccines linked to small increase in menstrual cycle length

National Institutes of Health (NIH) sent this bulletin at 01/26/2022 02:25 PM EST

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Young black woman with bandage from vaccination

COVID-19 vaccines linked to small increase in menstrual cycle length

Women who received COVID-19 vaccines had a less than one-day increase in the length of their menstrual cycles around the time of their doses.

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COVID-19 vaccines linked to small increase in menstrual cycle length

COVID-19 vaccines linked to small increase in menstrual cycle length

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