Immunizations: Chickenpox (Varicella)

Enlarged image of the Varicella zoster, Chickenpox, virus

Chickenpox is caused by the varicella-zoster virus.

Varicella is part of the herpes family of viruses. It causes an itchy rash on the skin.

Chickenpox easily spreads from person to person.

A vaccine can prevent chickenpox

The best way to prevent chickenpox is to get the vaccine!

Learn more about the chickenpox vaccine

About varicella

Just for health care providers

Chickenpox is a communicable disease. Health care providers must report cases of chickenpox.

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Last revised April 15, 2025