Vaccines train the body's defenses to fight infections safely. Learn how vaccines work, how the immune system responds, and ...

Having an mRNA COVID vaccine will not make your body produce new tumour-fighting T cells. What it might do, based on this ...

Covid vaccines may come with a tantalizing benefit that has nothing to do with the virus they’re designed to protect against: boosting the immune system to better fight tumors during cancer treatment.

Lung and skin cancer patients who were taking "checkpoint inhibitors" and had the COVID vaccine saw surprising results.

Cancer patients who got an mRNA COVID vaccine within a few months of their immunotherapy lived longer than those who did not, health records show.