They have a true virus as causative agent.
They are transmitted from human to human.
The virus can be demonstrated by electron microscopy.
Tissue culture identification of the virus is possible.
There is serologic evidence of infection.
Viral inclusion bodies can be seen in infected cells.
Most viruses infecting skin are DNA viruses.
KeywordsCorticosteroid Flare Meningitis Encephalitis Acetaminophen
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