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What does the evidence say?
There is no credible evidence that COVID-19 vaccines cause cancer. Most cancers typically take
to develop, but the study that reported a correlation between vaccination and cancer only followed people for one year after vaccination, making it highly unlikely that any cancers observed were caused by the vaccines. The Global Vaccine Data Network has
there is no credible mechanism through which COVID-19 vaccines could cause cancer. As noted above, the
Nature study, which builds on decades of research, shows that mRNA vaccines may help immune cells recognize tumors.
okay, wait - Here ->
The study primarily uses data from the Vaccine Adverse Event Reporting System (VAERS) as its main data source 1. VAERS is described as "a national early warning system to detect possible safety problems in U.S.-licensed vaccines" established through collaboration between the CDC and FDA .
Key Data Sources:
- VAERS Database: All data reported in the analysis were obtained by querying the online resource 2
- Time Period: The study focused on events received in the year 2021 for comparison analysis
No more should need be said here.
..but I'll say something anyway.
Is VAERS a reliable source for data in a study on vaccine safety:
No, the Vaccine Adverse Event Reporting System (VAERS) is not a reliable data source for a controlled study on vaccine safety.
While VAERS is a critical early-warning safety tool co-managed by the CDC and FDA, its fundamental design makes it mathematically and scientifically unsuitable for controlled scientific research.
Here is why VAERS cannot be used for controlled studies:
1. The Missing Piece: No Control Group
A controlled study requires two groups: a group that received the treatment (vaccination) and a
control group that did not, allowing researchers to compare background rates of illnesses. VAERS is strictly a "passive reporting system"—it only collects reports from people who were vaccinated and experienced an event. Because it lacks a baseline control group of unvaccinated individuals, researchers cannot calculate the actual risk or prove whether a vaccine caused an adverse event.
2. Unverified Data and Self-Reporting
- Anyone Can File a Report: Anyone can submit a report to VAERS, including patients, family members, and healthcare providers.
- No Proof Required: The system explicitly states that reports do not require medical proof or verification to be entered into the database.
- Incomplete Information: Many entries lack critical medical histories, autopsy reports, or clinical details, making it impossible to verify the true cause of the reported health event.
