What of these terms applies to chicken pox?

Chickenpox is primarily classified as a viral infection caused by the varicella-zoster virus (VZV). It is characterized by an itchy rash, fever, and flu-like symptoms. Additionally, chickenpox is considered a contagious disease, as it can easily spread from person to person through respiratory droplets or direct contact with the rash. Vaccination has significantly reduced the incidence of chickenpox in many regions.