Over 90% of people carry this virus (varicella zoster virus (VZV) and it can cause more than chickenpox and shingles https://medicalxpress.com/news/2026-09-people-virus-chickenpox-shingles.html#google_vignette Varicella zoster virus infection https://www.nature.com/articles/s41572-026-00735-5 1 in 3 people who carry VZV will experience reactivation during their lifetime