It's flu season again. That means public health officials are encouraging everyone over six months of age to get a flu shot.
Even if you don't have a primary health care provider, you can stop by your local drugstore to get one. Some businesses even provide on-site flu clinics, and some hospitals require mandatory flu shots for their staff. By 2020, U.S. health leaders would like to see 80 percent of the population get annual shots.
This is great news for vaccine manufacturers. Influenza shots given every year is a multibillion-dollar global bonanza.
The question is, are flu shots all they are cracked up to be?...