Dormant Virus Can Reactivate Years Later, UKHSA Warns Friday, February 27, 2026 virus shingles chickenpox ukhsa nhs vaccination dormant reactivation health immune The UK Health Security Agency (UKHSA) has highlighted a significant health concern involving the varicella-zoster virus, which causes chickenpox. This virus can remain dormant in the body for many years after the initial … Read More