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COVID-19 vaccines do not cause fertility problems: study

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COVID-19 vaccines do not cause fertility problems: study

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A new study adds to growing evidence that there is no link between COVID-19 vaccinations and a reduced chance of conceiving.

On the contrary, the couples in the study had slightly lower chances of conception if the male partner had been infected with the coronavirus within 60 days – which offers even more reason to get vaccinated against COVID-19, because the disease could affect male fertility in the short term. term, according to the study, published Thursday in the American Journal of Epidemiology.

“These results indicate that male SARS-CoV-2 infection may be associated with short-term decline in fertility and that COVID-19 vaccination does not impair fertility in either partner,” Amelia Wesselink et his fellow researchers – from Boston University School of Public Health and other institutions across the United States – wrote in the study. SARS-CoV-2 is the name of the virus that causes COVID-19.

“This adds to evidence from animal studies, studies of humans undergoing fertility treatment, and COVID-19 vaccine trials, none of which have found an association between COVID-19 vaccination and a lower fertility,” the researchers wrote. “Similarly, multiple studies have documented no appreciable association between COVID-19 vaccination and risk of miscarriage.”

The study included data on 2,126 women, ages 21 to 45, in the United States and Canada. The women enrolled in the study from December 2020 to September 2021, and the researchers followed them through November 2021.

During the study, the women completed online questionnaires every eight weeks about their reproductive and medical history, among other factors, and they were given the option of inviting their male partners to complete questionnaires.

Of the participants, 73% of women and 74% of their male partners had received at least one dose of the COVID-19 vaccine.

The researchers analyzed the questionnaire responses and found no association between having been vaccinated against COVID-19 and the likelihood of conceiving a child during a menstrual cycle.

Yet the data showed that although previous COVID-19 infection was not strongly associated with the likelihood of conceiving in women, men who had COVID-19 were associated with a “transient reduction” in the likelihood of conceiving.

The National Institutes of Health announced the study results in a press release on Thursday and noted that couples in which the male partner tested positive within 60 days were 18% less likely to conceive during that cycle. menstrual, but there was no difference in conception rates. for couples where the male partner had tested positive more than 60 days before a cycle, compared to couples where the male partner had not tested positive.

More research is needed to determine what might be causing these results, but fever is known to lower sperm count and is a symptom of COVID-19, according to the NIH.

“The results provide reassurance that vaccinating couples seeking pregnancy does not appear to impair fertility,” said Dr. Diana Bianchi, director of the Eunice Kennedy Shriver National Institute of Child Health and Human Development. NIH, which funded the study. “They also provide information to doctors who counsel patients who are hoping to conceive.”

COVID-19 vaccines do not cause fertility problems: study

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