Vaccines are at the forefront of daily news about COVID-19. Vaccines help prevent diseases that can be dangerous or even deadly by working with the body’s immune system. But how exactly do vaccines work?

On the Mayo Clinic Q&A podcast, Dr. Gregory Poland, an infectious diseases expert and head of Mayo Clinic's Vaccine Research Group, gives an overview of vaccines, including the different types of vaccines and how you can make sure you are up to date with all recommended vaccinations.
Research disclosures for Dr. Gregory Poland.