How is evidence of immunity defined?
Evidence of immunity includes any of the following: • Documentation of two doses of varicella vaccine • Blood tests that show you are immune to varicella or laboratory confirmation of prior disease • Born in the United States before 1980, excluding health-care workers, pregnant women, and immunocompromised persons. These individuals need to meet one of the other criteria for evidence of immunity. • Receipt from a healthcare provider of a) a diagnosis of chickenpox or b) verification of a history of chickenpox • Receipt from a healthcare provider of a) a diagnosis of herpes zoster (shingles) or b) verification of a history of herpes zoster (shingles). You do NOT need the chickenpox vaccine, if you meet any of the above criteria for evidence of immunity. You do NOT need the chickenpox vaccine, if you meet any of the above criteria for evidence of immunity.
