A study by researchers from Israel detects mRNA spike proteins in blood, placenta and sperm – even in unvaccinated people. The highly controversial research disappeared from the web only few days after it was published.
Source: tkp.at, Thomas Oysmüller, 09 December 2025
34 adults were scrutinised by Israeli researchers. They included 22 pregnant women, male sperm donors and unvaccinated people. Pfizer messenger RNA from the Covid vaccination was detected in the blood, placenta and semen.
The four researchers, all of whom work at different Israeli medical institutes, took an extremely precise methodological approach. They wanted to determine the exact genetic sequence of the Pfizer mRNA, not just a snippet of RNA code. In addition, each positive result had to be reproducible several times. This method makes the result all the more significant and explosive, as it is an investigation at the highest level of molecular genetics.
The paper entitled “Detection of Pfizer-BioNTech Messenger RNA COVID-19 Vaccine in Human Blood, Placenta and Semen” was ready in mid-October 2025, but was not published until early December. The researchers used the Gavin Publishers platform – a platform that is quickly vilified as “junk science” by the established scientific community. The pharmaceutical industry in particular regularly criticises the platform.
This makes it all the more serious that established scientists wrote the paper and then published it there: Dr Milana Frenkel-Morgenstern (expert in cancer genomics/RNA, over 11,000 citations, head of the laboratory for chimeric RNA at Bar-Ilan University) and co-author Dr Rinat Gabbay-Benziv (professor at the Technion, expert in maternal and fetal medicine, over 50 publications on placenta and high-risk pregnancy topics). By publishing on this platform, they are risking their reputation. At the same time, however, it is rather unlikely that such uncomfortable results will be accepted by established specialist journals. The fact that such an explosive study therefore appears on a rather suspicious platform also reflects the current climate in science: researchers are insecure and are being pushed into the academic “underground”.
The story becomes even more explosive because the paper is no longer available via normal channels. The study has been removed from the platform. However, it is still stored in the Internet Archive’s Wayback Machine – see here.
The study abstract states:
This study investigates the persistence of synthetic mRNA from the COVID-19 vaccine Comirnaty in the blood, placenta, semen and seminal fluid of vaccinated and unvaccinated individuals. Samples were taken from 34 participants, including 22 pregnant women, four male patients from a fertility clinic (who provided eight samples) and eight other individuals. RNA was extracted and analysed by nested PCR, and the resulting amplicons were confirmed by Sanger sequencing. Vaccine mRNA was detected in the blood, placental tissue, semen and seminal fluid of most vaccinated individuals. Notably, vaccine mRNA was detectable in about half of the samples collected more than 200 days after vaccination, indicating a longer retention time in the body. These results add to the limited data available on the biodistribution of the Comirnaty vaccine and its potential effects on pregnancy and fertility.
In addition, mRNA was also detected in 3 out of 6 unvaccinated pregnant women. The source of exposure must be investigated, according to the “surprising” discovery. The research team specifically states:
Interestingly, vaccine sequences were detected both in the blood and in the placenta of two of the six unvaccinated women. One non-vaccinated woman showed vaccine sequences only in the blood. These results were validated using two independent concentration assays.
This can be interpreted as an indication of the controversial “shedding”. The researchers do not confirm this, but call for an investigation into its origin. TKP has already reported on the possible meanings of the “shedding” results.
Vaccinated men are mentioned elsewhere:
We also detected vaccine mRNA in the semen of all three vaccinated donors who produced sperm. Interestingly, this is in contrast to the presence of SARS-COV-2 itself.
In some cases, messenger RNA was also detected in seminal plasma and in one man the mRNA was still detectable almost six months after treatment.
The results speak for themselves. However, the fact that the study was deleted only makes it even more explosive. The authors have not yet made a public statement. One thing is certain: After the research had gained worldwide attention, it disappeared again…
