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by postalrat 1970 days ago
Maybe in addition to offering immunity to covid-19 it also changes your immune response to a type of cancer cell. Then it's found that people with this change almost always suffer from the same type of cancer.

Some viruses are known to cause: https://en.wikipedia.org/wiki/Infectious_causes_of_cancer#Vi...

Right now our best guess is these vaccines are safe but there is no guarantee of that.