The Claim:
In an interview with Tucker Carlson, Peter McCullough presents a study that he says shows mRNA vaccines integrate with people’s genes and change them.
The Facts:
What McCullough showed was a case study, which means it looked at what happened to just one person. It was published in a journal that may not carefully check research. This kind of study does not show that mRNA vaccines mix with DNA or change people’s genes.
There is also a serious conflict of interest. The study was paid for by Neo7Bioscience, a private biotech company. The main researcher on the study is also the company’s CEO. This makes the results less trustworthy.
So what did the study actually find? The researchers found one short stretch of 20 “letters” in the woman’s DNA that matched part of the spike protein code from Pfizer’s vaccine reference. But the woman only received Moderna vaccines, not Pfizer.
Human DNA has billions of base pairs, so finding a match with 20 letters like this can happen by chance. It could also be caused by contamination, meaning outside genetic material may have accidentally mixed into the sample.
Until other independent labs repeat this work under strict rules and get the same results, this finding is only a possible coincidence. There is no proof that vaccine material entered the DNA or that it caused this woman’s cancer.
Disclaimer: Science is always evolving and our understanding of these topics may have evolved too since this was originally posted. Be sure to check out our most recent posts and browse the latest Just the Facts Topics for the latest.

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