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What is true is that vaccine safety has been studied extensively by regulators and independent scientists worldwide. Side effects exist (as with any medical product), but cancer is not recognized as one of them.
Do COVID-19 Vaccines Cause Cancer? Separating Fact from Misinformation
In recent months, claims circulating online have suggested that COVID-19 vaccines—particularly those developed by Pfizer—cause cancer. These claims are serious, but they are not supported by scientific evidence.
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