Skip to content 
At this time, the answer is no.
Extensive safety monitoring involving millions of people has not demonstrated that COVID-19 vaccines cause cancer.
Researchers continue to evaluate vaccine safety using:
Clinical trials
Population studies
National health databases
International vaccine monitoring systems
Peer-reviewed scientific research
While scientific research continues, current evidence does not support claims that COVID-19 vaccines initiate cancer or make existing cancers grow faster.
Why Do Some People Receive a Cancer Diagnosis After Vaccination?
Advertisement
Discover more
toothpaste
Medical Literature & Resources
Plumbing Fixtures & Equipment
One reason these claims persist is because cancer is unfortunately a common disease.
Millions of people around the world are diagnosed with cancer every year.
Since billions of vaccine doses have been administered globally, some individuals will naturally receive a cancer diagnosis shortly after vaccination simply because of timing.
This is known as correlation, not causation.
Two events occurring close together do not automatically mean one caused the other.
Understanding Correlation vs. Causation
Discover more
Ginger drink health
Moisture resistant containers
Tomato drink benefits
This distinction is one of the most important concepts in medical research.
For example:
Someone may develop cancer weeks after vaccination.
Another person may suffer a heart attack after receiving a vaccine.
Someone else may be diagnosed with diabetes shortly afterward.
These events may occur after vaccination without being caused by the vaccine.
Researchers must conduct carefully designed studies before concluding that one event directly causes another.