Is The Flu Shot Effective In 2021 Here S What Doctors Say
But why, and why do you need a flu shot every year? There are several reasons, says Dr. Neha Vyas, MD, family medicine specialist at Cleveland Clinic. Over time, your immune protection from past vaccination decreases, and different flu strains pop from year to year. “The flu is a contagious and serious respiratory infection,” she explains. “For certain people, it can put them at risk of serious complications or death....