Claims that Covid-19 vaccines reduce fertility have circulated widely since the start of the pandemic, especially on social media. However, a large new study from Sweden has found no evidence to support those fears.

Researchers analyzed health data from nearly 60,000 women aged 18 to 45 and found that Covid vaccination did not affect the rates of childbirth or miscarriage. The study found no statistically significant difference in pregnancy outcomes between vaccinated and unvaccinated women.

The research was led by scientists from Linköping University and published in the medical journal Communications Medicine. According to lead researcher Toomas Timpka, it is highly unlikely that mRNA Covid vaccines played any role in the decline in births seen in some countries during the later stages of the pandemic.

Out of the women included in the study, about 75 percent had received at least one Covid vaccine dose between 2021 and 2024. Researchers reviewed official healthcare records covering vaccinations, childbirths, miscarriages, and deaths. The results showed equal childbirth rates among vaccinated and unvaccinated women, as well as no difference in miscarriage rates.

Unlike many earlier studies that focused on couples undergoing fertility treatment, this research examined pregnancy outcomes in the general population. The researchers also adjusted their findings to account for other factors that can affect fertility, such as age and existing health conditions.

The study adds to a growing body of evidence showing no connection between Covid vaccines and fertility problems. At the same time, previous research has shown that Covid infection itself can be dangerous for pregnant women, while vaccination significantly reduces the risk of severe illness.


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Based on current scientific evidence, researchers say the benefits of Covid vaccination clearly outweigh any potential risks. Women planning to start a family should not hesitate to get vaccinated.

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