Dennis J Cunningham, MD

There are now multiple studies that show natural immunity after COVID-19 infection is less effective than vaccination. Here's why. 

Additional doses of COVID-19 vaccines are now recommended for everyone ages 12+. Here are the booster shot guidelines--and why everyone should get one.

The FDA issued an emergency use authorization for the Pfizer vaccine in kids ages 5 to 11. Here's why it's important that parents get their children vaccinated.

If you have a weakened immune system, additional doses of the Pfizer or Moderna vaccine will strengthen your immune response against COVID-19. An expert shares when you should get your third dose and booster shot.