Facebook Twitter Tumblr Close Skip to main content
A Project of The Annenberg Public Policy Center
SciCheck’s COVID-19/Vaccination Project

Study Largely Confirms Known, Rare COVID-19 Vaccine Side Effects

Study Largely Confirms Known, Rare COVID-19 Vaccine Side Effects

An international study of around 99 million people confirmed known serious side effects of COVID-19 vaccination. It also identified a possible relationship between the first dose of the Moderna vaccine and a small risk of a neurological condition. Social media posts about the study left out information on the vaccines’ benefits and the rarity of the side effects.

Posts Mislead About COVID-19 Vaccine Safety With Out-of-Context Clip of FDA Official

Posts Mislead About COVID-19 Vaccine Safety With Out-of-Context Clip of FDA Official

Given the extra scrutiny and large number of doses, reports of possible side effects to a vaccine safety monitoring system increased with the COVID-19 vaccines. The high number of reports does not mean the vaccines are unsafe, contrary to suggestions made by posts sharing a clip of a Food and Drug Administration official acknowledging the surge.

Amy Schumer Has Endometriosis, Not a Vaccine-Related Ailment

Amy Schumer Has Endometriosis, Not a Vaccine-Related Ailment

Comedian Amy Schumer has said she’s having “some medical and hormonal” issues related to endometriosis that have affected her appearance. But some social media users are falsely claiming that Schumer announced she is suffering from a vaccine-related ailment. Schumer has said no such thing.

Viral Posts Misuse Rat Study to Make Unfounded Claims About COVID-19 Vaccines and Autism

Viral Posts Misuse Rat Study to Make Unfounded Claims About COVID-19 Vaccines and Autism

COVID-19 vaccination during pregnancy benefits both mother and baby. Side effects are generally mild, and studies don’t show negative effects on the baby. A criticized study that gave COVID-19 vaccines to pregnant rats doesn’t show that vaccines cause autism or that people shouldn’t get COVID-19 vaccines, contrary to claims.

Tucker Carlson Video Spreads Falsehoods on COVID-19 Vaccines, WHO Accord

Tucker Carlson Video Spreads Falsehoods on COVID-19 Vaccines, WHO Accord

COVID-19 vaccines are generally safe and have not killed 17 million people worldwide, contrary to claims amplified by podcaster Bret Weinstein during an interview with Tucker Carlson. Weinstein also inaccurately characterized a proposed World Health Organization pandemic accord and other changes, claiming they aim to take away “personal and national sovereignty.”

Yale Preprint Recorded Patient Experiences, Did Not Demonstrate Vaccines Cause New Syndrome

Yale Preprint Recorded Patient Experiences, Did Not Demonstrate Vaccines Cause New Syndrome

A preprint on a Yale-based study described chronic symptoms self-reported after COVID-19 vaccination by 241 members of an online group. The paper, which has not been peer-reviewed, did not show how common these symptoms are in the general population, nor whether vaccinations caused them — limitations popular online posts did not make clear.

Posts Spread False Claim About Moderna Patent Application

Posts Spread False Claim About Moderna Patent Application

The mRNA COVID-19 vaccines — like many other vaccines — can contain small amounts of DNA left over from the manufacturing process. There’s no evidence this residual DNA causes “turbo cancer,” or very aggressive cancer. Nor did Moderna admit that “mRNA Jabs Cause Turbo-Cancer,” contrary to an online article that misconstrues a line from a patent application.