Alarming study: birth rates in vaccinated women dropped drastically!
A new study shows a significant decline in the birth rate for vaccinated women in the Czech Republic. Experts are calling for further examinations.

Alarming study: birth rates in vaccinated women dropped drastically!
In the Czech Republic, a worrying trend in relation to the birth rate of women who were vaccinated against Covid-19 is determined. A comprehensive analysis of official vaccination and birth statistics, which includes around 1.3 million women between the ages of 18 and 39, shows that vaccinated women are significantly born than their unvaccinated peers. This study, which is based on data from the period from June 2021 to the end of 2022, reports of a birth rate that was about 1.5 times lower for vaccinated women than in unvaccinated women. This information is presented exxpress.at, whereby it is emphasized that it is a preliminary analysis that is not evidence of a causal relationship.
The situation is also reflected in the trends of the birth rate. This dropped in the Czech Republic of 1.83 children per woman in 2021 to only 1.45 in 2023. It is particularly noticeable that the total birth rate among vaccinated women is about 50 percent lower than in unvaccinated women, which is a significant change. The researchers, including experts from Denmark, Sweden and the Czech Republic, agree that further studies are necessary to better understand the connection between vaccination status and fertility. The tkp.at also emphasizes that 96 percent of the vaccinated vaccine were mrna vaccines from biontech/pfizer and moderna.
Criticism of the vaccination recommendation for pregnant women
In this context, the Working Group for Medical Ethics (AGFME) on May 16, 2025 has an open letter to Prof. Dr. Martin Berner, the chairman of the constant vaccination commission (STIKO). In it, the AGFME demands that the CORONA MRNA vaccination recommendation be suspended during pregnancy until an independent re-evaluation is made. The authors mention that there are studies and animal experiments that indicate that components of the vaccines are able to overcome the placenta barrier, which could lead to an "unnoticed intrauperine vaccination" of the fetus. This topic raises questions about the effects of vaccine on female fertility and health of unborn children.
In addition, the view is represented that the causes of the decline in birth rates can be versatile. In Austria, for example, the weakest month of birth was recorded in February 2025 since 1951. Experts demand that medical factors such as vaccinations to be included in the analysis. Gynecologist Dr. Christian Fiala emphasizes that the search for causes must be “without taboos” in order to illuminate the complex relationships.
global developments and scientific assessments
The decline in birth rates is not only limited to the Czech Republic. A similar decline was observed in many countries, including Spain, Japan, the United Kingdom and the United States. In this context, Swissmedic, the Swiss drug authority, has determined that there is no evidence that mRNA vaccines negatively influence human fertility. In a comprehensive review by Swissmedic and ten partner authorities, no signals were identified that indicate fertility problems in connection with the COVID-19 vaccination.
summed up, the influence of the Covid 19 vaccination on fertility remains a controversial topic. Neither the previous studies nor the analyzes of health authorities such as Swissmedic were able to demonstrate a direct causal connection between vaccination and a decline in the birth rate. Nevertheless, the current situation in the Czech Republic and other countries shows that the topic of a further scientific investigation needs to receive clear answers. Experts fear that economic uncertainties and social factors may have influenced the desire to have children.