Fetal DNA in vaccines: controversy resurfaces without scientific backing

Why fetal DNA in vaccines is raising alarms again

An academic paper with a troubling title —"Insertional Mutagenesis and Autoimmunity Induced Disease Caused by Human Fetal and Retroviral Residual Toxins in Vaccines"— has peine the old question of whether traces of human fetal DNA present in certain vaccines can cause autism or cancer. It is authored by Peter Jarzyna, Ngoc V. Doan and Theresa A. Deisher, all affiliated with the Sound Choice Pharmaceutical Institute.

What the study claims

The abstract making the rounds repeats the usual points: that the DNA comes from fetal cell lines used in vaccine production, that the amounts exceed recommended limits, and that the fragmentation of the genetic material, far from solving the problem, may have made it worse by facilitating insertional mutagenesis. Autoimmunity appears as a second front.

Skepticism prevails

The reaction from the scientific community and a considerable part of the public is outright skepticism. The most repeated argument is not technical but methodological: when the cause of something is not understood, an explanation is invented. And when it comes to vaccines, the conspiratorial explanation has appeal. "Could the cause be something as simple as the fact that there are different human beings?" asks one of the most sensible comments, referring to real genetic heterogeneity.

The analogy with bovine spongiform encephalopathy also comes up: if feeding animal feed with meat remains to herbivores triggered the mad cow crisis, wouldn't it be reckless to inject foreign DNA into the human body? The question sounds reasonable until you remember that the scientific community has been examining DNA residues for decades without finding a proven causal mechanism.

So the matter remains where it was: a study with provocative conclusions, a skeptical majority, and the evidence, for now, in the same place. Until empirical data going beyond the hypothesis are published, the alarm will remain just that: an alarm that never catches fire.