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Zoster is chickenpox(I think it is varicella zoster, related to Herpes), Herpes Simplex 1 used to be simple cold sore, HS 2 used to be associated with venerial disease, lot of over lap on HS1 and HS 2 due to oral/genital contact.
Shingles is sort of a flare up of chickenpox; when you have it as a child(hopefully as a child, not an adult, tougher as adult) your immune system kicks the virus' ass, and it goes dormant in your spinal nerve roots.
Later, as an adult, when you are under physiological stress, or have a compromised immune system for whatever reason, you see shingles as a very painful rash in the distribution(dermatome) of the nerve root. Sometimes you get pain before skin changes are visible, sometimes not. If you are exposed to someone with active shingles that can set it off too.
Viruses are sort of wierd. They are not really alive unless they are infecting something. Tough to kill something that is not alive.
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