FAQs

What are the serious complications from chickenpox?

Serious complications from chickenpox include bacterial infections of the blisters, pneumonia, infection of the brain (encephalitis), and birth defects. Many people are not aware that, before a vaccine was available, there were approximately 11,000 hospitalizations and 100 deaths from chickenpox in the U.S. every year. About one child and one adult died each week; most of these persons were healthy or did not have a medical illness (such as cancer) that placed them at higher risk of getting severe chickenpox.

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