Answer: B
The herpes viruses are important enveloped DNA viruses that cause disease in vertebrates and in some invertebrates such as oysters. Some of the human forms are herpes simplex virus (HSV) types I and II causing facial and genital lesions and the varicella zoster virus (VSV) causing chicken pox and shingles. Each of these three actively infects nervous tissue. Primary infections are fairly mild but the virus is not then cleared from the host; rather viral genomes are maintained in cells in a latent phase. The virus can later reactivate replicate a...

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