Skip to content

Reproductive health and mRNA vaccine

The Claim:

A “whistleblower” group on Twitter has shared a video of Pfizer’s director of research and development, claiming the video reveals fertility concerns related to the length of time mRNA stays in the body

The Facts:

Project Veritas, a self-described far-right activist group, captured Pfizer’s director of research and development in an undercover “gotcha” interview. The video is presented as his “admission” that mRNA vaccine affects women’s menstrual cycles and causes fertility concerns.

He does admit that menstrual cycles are impacted by the mRNA COVID vaccine. Studies have shown a link between COVID-19 vaccination and menstrual cycle length, but the changes are temporary and within a normal range of variation. There have also been studies into fertility which do not show any correlation between COVID vaccine and reduced fertility.

The tweet’s suggestion that mRNA lingers in the body is taken out of context. The mRNA molecule is very unstable and is quickly broken down by the body. In the video, when he says, “I hope we don’t find that mRNA lingers in the body,” he isn’t actually concerned that they will. Rather, he appears to be enjoying the conversation and prompted by the interviewer to throw out worst-case scenarios.

Disclaimer: Science is always evolving and our understanding of these topics may have evolved since this was originally posted. Browse the latest information posted in Just the Facts Topics.

Just the Facts Newsletter:

Correcting this week's disinformation

Sign up to get a weekly look at the latest vaccination facts as we debunk the latest false vaccination claims making the rounds on the internet.


Back To Top