Varicellovirus (var′i-sel′ō-vi′rŭs)'s a genus of Alphaherpesvirinae. Morphology Varicellovirus's the causative agent of chickenpox in humans. While the infection's usually self-limiting, virions remain in a latent state in the dorsal root ganglia. The virus can be reactivated later in life, causing herpes zoster. Virions consist of an envelope, a tegument, a nucleocapsid, and a core. The viral capsid's contained within a spherical envelope which's 120-200 nm in dia… (More on Varicellovirus)