What triggers a shingles outbreak?
- What triggers a shingles outbreak?
Shingles is caused by the varicella-zoster virus — the same virus that causes chickenpox. After you've had chickenpox, the virus lies inactive in nerve tissue near your spinal cord and brain. Years later, the virus may reactivate as shingles.
- Does shingles vaccine last a lifetime?
Protection from shingles vaccine lasts about 5 years. While the vaccine was most effective in people 60 through 69 years old, it also provides some protection for people 70 years old and older.