Immunizations: Shingles (Herpes Zoster)

Close up of the shingles virus

Shingles is an infection caused by the varicella-zoster virus. It’s the same virus that causes chickenpox. People who’ve had chickenpox in the past are at risk for shingles.

More than 99% of Americans born before 1980 have had chickenpox, even if they don’t remember it. After a person recovers from chickenpox, the virus stays dormant, or inactive, in their body. The virus can become active again later in life, causing shingles. The risk of shingles increases as you get older.

A vaccine can prevent shingles

The best way to prevent shingles is to get vaccinated!

Learn more about the shingles vaccine

Shingles 101

Just for health care providers

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Last revised January 27, 2025