Many of our listeners came of age before there was a chickenpox vaccine. In fact, the Centers for Disease Control and Prevention report that studies show that more than 99% of Americans aged 40 and older have had chickenpox, even if they don't remember getting the disease. But once we got done with the fever, blisters, scabs and a week off from school, the varicella virus wasn’t done with us. I had chicken pox in second grade. The shingles vaccine lies in my future. According to the Mayo Clinic,