No research shows that COVID-19 vaccines promote cancer in people; study cited as evidence tested the spike protein from the virus in laboratory cells
COVID-19 vaccination reduces the risk of COVID-19 hospitalization and death and is particularly important for people who are at a higher risk for severe COVID-19 complications. These include people with cancer and other conditions that can weaken the immune system. There is currently no evidence suggesting that COVID-19 vaccines increase the risk of cancer, make it more aggressive, or make cancer therapy less effective.