Health and Me

Ishita Roy

COVID Vaccination Is Not Linked To Reduce In Childbirth, Says Study

A large population-based <span>study</span> from Linköping University in Sweden has found no evidence that COVID-19 vaccination caused a decline in childbirth during the pandemic, countering persistent rumors that mRNA vaccines affect fertility. The findings have been published in the peer-reviewed journal Communications Medicine.

The study was conducted amid widespread misinformation, particularly on social media, suggesting that COVID-19 vaccines reduce the chances of becoming pregnant. These claims gained traction as several countries, including Sweden, recorded a drop in birth rates during the later stages of the pandemic, prompting questions about a possible link to vaccination.

“Our conclusion is that it’s highly unlikely that the mRNA vaccine against COVID-19 was behind the decrease in childbirth during the pandemic,” said Toomas Timpka, professor of social medicine at Linköping University and one of the study’s authors.

<h2>Why Researchers Investigated the Claim</h2>

Since the early months of the pandemic, unverified claims about vaccines and fertility have circulated widely online. When official data later showed fewer babies being born in some regions, researchers decided to examine whether vaccination could plausibly explain the trend or whether other social and demographic factors were at play.

Read: <a href="https://www.healthandme.com/health-news/ahmedabad-toddler-swallows-hulk-toy-showed-x-ray-doctors-remove-it-via-endoscopy-article-153559314" data-type="tilCustomLink">Ahmedabad Toddler Swallows Hulk Toy, Showed X-Ray, Doctors Remove It Via Endoscopy</a>

To address the issue, the research team carried out an extensive analysis using real-world healthcare data rather than surveys or self-reported outcomes.

<h2>Study Looks at Nearly 60,000 Women</h2>

The study analyzed health records of all women aged 18 to 45 years living in Region Jönköping County, a region with a total population of around 369,000 people. This amounted to nearly 60,000 women included in the analysis.

Between 2021 and 2024, about 75 per cent of these women received at least one dose of a COVID-19 vaccine. Researchers examined data on childbirths, registered miscarriages, vaccination status and deaths using official healthcare records, allowing for a comprehensive comparison between vaccinated and unvaccinated groups.

Importantly, the researchers adjusted their analysis for age, recognizing that age is one of the most significant factors influencing fertility and pregnancy outcomes.

<h2>No Difference in Births or Miscarriages</h2>

When childbirth rates were compared between vaccinated and unvaccinated women, the researchers found no statistically significant difference. The same held true for miscarriage rates among women who became pregnant during the study period.

“We see no difference in childbirth rates between those who have taken the vaccine and those who haven’t,” said Timpka. “We’ve also looked at all registered miscarriages among those who became pregnant, and we see no difference between the groups there either.”

These findings align with several earlier international studies that have similarly found no association between COVID-19 vaccination and reduced fertility.

<h2>Other Factors Likely Behind Falling Birth Rates</h2>

According to the researchers, the decline in childbirth observed during the pandemic is more plausibly explained by broader demographic and social trends.

People currently in their 30s, the age group most likely to have children, were born in the second half of the 1990s. That period was marked by economic challenges and lower birth rates in Sweden, meaning today’s pool of potential parents is smaller than in previous generations.

In addition, pandemic-related factors such as health concerns, economic uncertainty, delayed family planning and lifestyle changes during lockdowns may have contributed to fewer pregnancies.

One of the study’s key strengths is its large, representative sample drawn from an entire region rather than a selected group. By using verified healthcare records and accounting for age-related effects, the researchers aimed to minimize bias and improve reliability.

The study received financial support from several sources, including the Swedish Research Council.

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A large population-based study from Linköping University in Sweden has found no evidence that COVID-19 vaccination caused a decline in childbirth during the pandemic, countering persistent rumors that mRNA vaccines affect fertility. The findings have been published in the peer-reviewed journal Communications Medicine.The study was conducted amid widespread misinformation, particularly on social media, suggesting that COVID-19 vaccines reduce the chances of becoming pregnant. These claims gained traction as several countries, including Sweden, recorded a drop in birth rates during the later stages of the pandemic, prompting questions about a possible link to vaccination.“Our conclusion is that it’s highly unlikely that the mRNA vaccine against COVID-19 was behind the decrease in childbirth during the pandemic,” said Toomas Timpka, professor of social medicine at Linköping University and one of the study’s authors.Why Researchers Investigated the ClaimSince the early months of the pandemic, unverified claims about vaccines and fertility have circulated widely online. When official data later showed fewer babies being born in some regions, researchers decided to examine whether vaccination could plausibly explain the trend or whether other social and demographic factors were at play.Read: Ahmedabad Toddler Swallows Hulk Toy, Showed X-Ray, Doctors Remove It Via EndoscopyTo address the issue, the research team carried out an extensive analysis using real-world healthcare data rather than surveys or self-reported outcomes.Study Looks at Nearly 60,000 WomenThe study analyzed health records of all women aged 18 to 45 years living in Region Jönköping County, a region with a total population of around 369,000 people. This amounted to nearly 60,000 women included in the analysis.Between 2021 and 2024, about 75 per cent of these women received at least one dose of a COVID-19 vaccine. Researchers examined data on childbirths, registered miscarriages, vaccination status and deaths using official healthcare records, allowing for a comprehensive comparison between vaccinated and unvaccinated groups.Importantly, the researchers adjusted their analysis for age, recognizing that age is one of the most significant factors influencing fertility and pregnancy outcomes.No Difference in Births or MiscarriagesWhen childbirth rates were compared between vaccinated and unvaccinated women, the researchers found no statistically significant difference. The same held true for miscarriage rates among women who became pregnant during the study period.“We see no difference in childbirth rates between those who have taken the vaccine and those who haven’t,” said Timpka. “We’ve also looked at all registered miscarriages among those who became pregnant, and we see no difference between the groups there either.”These findings align with several earlier international studies that have similarly found no association between COVID-19 vaccination and reduced fertility.Other Factors Likely Behind Falling Birth RatesAccording to the researchers, the decline in childbirth observed during the pandemic is more plausibly explained by broader demographic and social trends.People currently in their 30s, the age group most likely to have children, were born in the second half of the 1990s. That period was marked by economic challenges and lower birth rates in Sweden, meaning today’s pool of potential parents is smaller than in previous generations.In addition, pandemic-related factors such as health concerns, economic uncertainty, delayed family planning and lifestyle changes during lockdowns may have contributed to fewer pregnancies.One of the study’s key strengths is its large, representative sample drawn from an entire region rather than a selected group. By using verified healthcare records and accounting for age-related effects, the researchers aimed to minimize bias and improve reliability.The study received financial support from several sources, including the Swedish Research Council.