Chickenpox vaccine after exposure

A clinician will consider whether the contact is likely to be immune, when the exposure happened, the person’s age and health, pregnancy status, and medicines that affect immunity. Vaccination after exposure is not suitable for everyone and cannot be treated as a guarantee that illness will be prevented. Watch for fever, tiredness, and an itchy blistering rash. [Chickenpox](/conditions/chickenpox/) can be more concerning in people with reduced immune protection.

Write down when the exposure occurred, how close and prolonged the contact was, and whether the person has had chickenpox or prior vaccination. Call before arriving at a clinic so staff can reduce contact with other patients if symptoms begin. Avoid contact with pregnant people, newborns, and anyone immunocompromised while illness is possible. Ask about [Chickenpox Vaccination](/treatments/preventive-care-and-vaccination/chickenpox-vaccination/) and whether a different preventive option is needed.

Seek same-day medical advice after exposure if the person is pregnant, a newborn, has a weakened immune system, or takes immune-suppressing medicine. Get urgent help for breathing difficulty, confusion, severe drowsiness, dehydration, or a rapidly worsening rash. Contact a clinician if [Fever](/symptoms/fever/) develops or if [Skin Blisters](/symptoms/skin-blisters/) become hot, swollen, or painful. A [GP Consultation](/treatments/consultations-and-assessment/gp-consultation/) can coordinate next steps.

Ask whether the exposure counts as significant, whether vaccination is appropriate now, how long to monitor for symptoms, and what to do if illness starts. Ask whether [Antiviral Treatment](/treatments/medical-dermatology/antiviral-therapy/) could be considered for the person’s risk profile.