Varicella Zoster vaccination

The topic of varicella zoster vaccination has come up several times this week. Probably time for a summary. Varicella zoster, commonly called shingles is caused by the reactivation (reawakening) of chickenpox virus also called varicella zoster virus (VZV) in the distribution of a nerve root that results in a localized single-sided rash that later blisters [...]