What should you know about varicella non immune pregnancy?

Varicella, also called chickenpox, is a viral infection that often produces fever and an itchy rash with blisters. A non-immune result means there is no reliable evidence that you are protected, whether because you have not had chickenpox, have no documented vaccination, or have an uncertain test result. It does not confirm that you are infected. Shingles is a different presentation of the same virus and usually occurs after earlier infection.

Pregnancy changes how exposure should be managed because both your health and the developing baby need to be considered. Do not rely on a home decision about immunity or treatment. Keep a record of the contact, the other person’s illness, and the date it happened for the clinician.

Call your maternity team, GP or another qualified clinician promptly if you have been exposed to chickenpox or shingles. State that you are pregnant, that you may be varicella non-immune, and when the contact occurred. They can review your history and test results and decide whether post-exposure treatment or monitoring is appropriate.

Chickenpox vaccination is generally planned outside pregnancy, so ask your clinician about the safest timing rather than arranging it yourself. Avoid close contact with people who have chickenpox or a fresh shingles rash until you receive individual advice. If a rash develops, do not start antiviral treatment or antihistamine treatment without speaking with a clinician about pregnancy-appropriate options.

Seek same-day medical advice if fever, an unexplained rash, or new skin blisters develop during pregnancy, particularly after a known exposure. Tell the service before attending in person so they can reduce contact with other vulnerable people. Seek urgent help for breathing difficulty, severe headache, confusion, marked drowsiness, or a rapidly worsening illness. A clinician can assess the rash and coordinate pregnancy care.

Ask: How was my immunity assessed? What counts as a significant exposure? Should I have testing or preventive treatment now? Which symptoms require same-day review? When could chickenpox vaccination be considered after pregnancy, and how should close household contacts reduce my exposure risk?