Covid-19 mRNA vaccines could help boost the immune system to fight off cancer, according to a study published in the journal Nature. The study looked at the clinical outcomes for over 1,000 patients with late-stage melanoma or lung cancer who were treated with a form of immunotherapy called immune checkpoint inhibitors.

The findings showed that “patients who received either the Pfizer or Moderna mRNA-based Covid-19 vaccine within 100 days of starting immunotherapy were more than twice as likely to be alive after three years compared with those who didn’t receive either vaccine.”