CASE 2: A 47-year-old man visited his doctor with complaints of a very painful red skin rash that appeared in a banding pattern across his back. The physician immediately suspected a highly contagious viral infection, and antibody tests confirmed his diagnosis. The patient was given antiviral drugs, pain medication, and confined to bed rest for several weeks until the worst of his symptoms subsided. Eventually, the rash cleared, and the patient's symptoms completely cleared.
QUESTIONS:
1. What disease does this patient have, and what virus causes it?
2. What accounts for the rash's banding pattern?
3. Has this patient been exposed to this virus before? How do you know this?