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mRNA COVID-19 vaccines and cancer risk

The relationship between mRNA COVID-19 vaccines and cancer risk, including potential mechanisms and epidemiologic evidence.

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2 results
Feb 5, 2026

Have any peer-reviewed studies shown mRNA COVID vaccines increase cancer incidence?

No peer‑reviewed study has demonstrated that causally increase cancer incidence; a mix of cohort studies, case reports, surveillance signals and reviews have reported temporal associations or raised b...

Feb 4, 2026

What mechanisms would plausibly link mRNA vaccines to cancer, and what evidence supports or refutes each mechanism?

Concerns fall into a few mechanistic buckets—genomic integration, chronic inflammation or innate immune effects, transient immunosuppression, and off-target effects of lipid nanoparticle (LNP) deliver...