Despite CDC Recommendation, Many Adults Still Refusing Shingles Vaccine. Shingles is an extremely common—and painful—viral infection, affecting 1 out of every 3 Americans at some point in their life. It’s caused by the same virus that causes chickenpox, so anyone who has had chickenpox is at risk of developing shingles. After a person recovers from chickenpox, the virus remains dormant in the body. While scientists are unsure what causes the virus to awaken at a later date, they do know that the only way to reduce the risk of getting shingles is to get vaccinated.