Activist misuses federal data to make Pants on Fire claim that COVID-19 vaccines killed 676,000

A blog post shared on Facebook claimed that COVID-19 vaccines have killed some 676,000 people in the U.S.

The post was written by anti-vaccine activist Steve Kirsch, who has made other vaccine claims debunked by PolitiFact and other fact-checkers. 

Kirsch’s Aug. 6 post referred to the Vaccine Adverse Event Reporting System, a federal database. 

"VAERS data is crystal clear," the headline read. "The COVID vaccines are killing an estimated 1 person per 1,000 doses (676,000 dead Americans)."

The blog post was shared on social media and flagged as part of Meta’s efforts to combat false news and misinformation on its News Feed. (Read more about our partnership with Meta, which owns Facebook and Instagram.)

The data Kirsch used is from an anti-vaccine group’s alternative gateway to VAERS. VAERS, which includes unverified reports, cannot be used to determine whether a vaccine caused death. Kirsch did not reply to our request for information.

"Statements that imply that reports of deaths to VAERS following vaccination equate to deaths caused by vaccination are scientifically inaccurate, misleading and irresponsible," the federal Centers for Disease Control and Prevention told PolitiFact.

The CDC added that it "has not detected any unusual or unexpected patterns for deaths following immunization that would indicate that COVID vaccines are causing or contributing to deaths, outside of the nine confirmed" thrombosis with thrombocytopenia syndrome, or TTS, deaths following the J&J/Janssen COVID-19 vaccine, which is longer offered in the U.S.

TTS, which causes blood clots, has occurred in approximately four cases per 1 million doses administered, according to the CDC. 

VAERS is run by the CDC and the Food and Drug Administration. It helps researchers collect data on vaccine aftereffects and to detect patterns that may warrant a closer look.

The CDC cautions that VAERS results, which come from unverified reports that anyone can make, are not enough to determine whether a vaccine causes a particular adverse event. 

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stated on November 26, 2024 in an Instagram post

“The CDC says that little 6 month old babies must get SEVEN doses of the Covid vaccine in order to be considered fully ‘up to date’ on their vaccinations.”

For the COVID-19 vaccines, VAERS has received a flood of reports, and they have become especially potent fuel for misinformation.

Kirsch made his claim not using VAERS directly, but with an alternative gateway to VAERS from the anti-vaccine National Vaccine Information Center. 

That website draws on raw and limited VAERS reports, which can include information that is incomplete or inaccurate. These reports do not provide enough information to determine  whether a vaccine caused a particular adverse event.

There is no evidence that COVID-19 vaccines have killed people in the U.S. in large numbers, let alone 676,000. We rate the claim Pants on Fire!

RELATED: Federal VAERS database is a critical tool for researchers, but a breeding ground for misinformation

RELATED: How an alternative gateway to VAERS data helps fuel vaccine misinformation