Varicella-zoster virus
Chickenpox is caused by the varicella-zoster virus, a member of the herpesvirus family. The disease is highly contagious and is known for its classic symptom of itchy, blister-like rash on the skin. Apart from chickenpox, the varicella-zoster virus also causes shingles, a disease that can occur later in life in those who have had chickenpox.
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