| varicella zoster virus infection in patients taking the tnf-alpha inhibitor, etanercept: coincidence or causal? | ninety percent of varicella infections are seen in children under the age of ten and usually follow a benign clinical course with complete resolution of symptoms in one to three weeks. herpes zoster an acute vesicular eruption due to the varicella-zoster virus (vzv), occurs mostly in adults. biologic agents include tumor necrosis factor alpha (tnf-alpha) inhibitors that have significantly impacted the treatment of autoimmune and inflammatory conditions. therapy with tnf-alpha inhibitors poses a ... | 2009 | 20034255 |