Safety and Effectiveness of Live Zoster Vaccine in Anti-Tumor Necrosis Factor (TNF) Users (VERVE Trial)

Inclusion Criteria:

* Must be 50 years of age or older
* Must be currently treated with an anti-tumor necrosis factor (TNF) therapy\*\* at the time of study drug administration, allowing for small deviations in dosing frequency and logistic feasibility (e.g. study visits to occur on a week day). Date of previous dose of medication is required. Specifically, meets one of the following: Etanercept dose within 9 days (1 week + 2 days), Adalimumab dose within 16 days (2 weeks + 2 days), Certolizumab Subcutaneous (SC) dose within 16 to 32 days depending on frequency schedule (2 weeks + 2 days, or 4 weeks and 4 days), Golimumab Subcutaneous (SC) dose within 32 days (4 weeks + 4 days), Golimumab Intravenous (IV) dose within 64 days (9 weeks + 1 day), Infliximab IV dose within last 64 days (9 weeks + 1 day)

  \*\*any form of biosimilar for the above listed anti-tumor necrosis factor (TNF) medications is acceptable
* Diagnosis of rheumatoid arthritis or another inflammatory arthritis (Phase 1A); or other inflammatory condition (e.g. psoriasis) requiring use of anti-tumor necrosis factor (TNF) therapy (Phase 1B and II)
* Phase I subjects must test positive for varicella-zoster virus (VZV) antibody immunoglobulin G (IgG)
* Subjects should have a self-reported history of prior varicella infection (i.e. chicken pox) or long-term residence (\>30 years) in the continental United States.
* Phase IA subjects must not have received any oral or systemic glucocorticoids within 30 days prior to vaccination. Intra-articular glucocorticoid injections and inhaled glucocorticoids within the previous 30 days are acceptable.
* Subjects should be on stable doses of all biologic and non-biologic Disease-modifying antirheumatic drugs (DMARDs) for a minimum of 30 days prior to vaccination.
* Eligible women must be post-menopausal (\> 1 year since last menstrual period) or have a surgical history of bilateral oophorectomy or hysterectomy.
* Subjects should be ambulatory, community dwelling and capable of giving informed consent.

Exclusion Criteria:

* Documented varicella-zoster virus (VZV) antibody immunoglobulin G (IgG) negative result
* Prior use of the zoster vaccine (Zostavax®, Merck)
* Glucocorticoids at a prednisone-equivalent daily dose \> 10mg/day (for Phase 1B and Phase II participants; all systemic glucocorticoid use is prohibited for Phase 1A patients)
* Any known contraindication to Zostavax® vaccine, including allergy or sensitivity to gelatin or any other vaccine component
* Known human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS)
* Currently receiving radiation or chemotherapy for any type of malignancy
* Any current use (within the last 30 days) of acyclovir, valacyclovir, famciclovir, or foscarnet
* Receipt of any other immunizations within one month before study vaccination (2 weeks in the case of inactivated influenza vaccines or other non-replicating immunization products \[e.g., diphtheria-tetanus (dT), pneumococcal vaccine, hepatitis A vaccine, hepatitis B vaccine\]), or scheduled within 6 weeks after recruitment.
* Active infection or inter-current illness (e.g., urinary tract infection, influenza)
* Participated in an investigational study within 1 month prior to study entry
* Active drug or alcohol use, dependence, or any other reason that, in the opinion of the site investigator, would interfere with the study
* Significant underlying illness that would be expected to prevent completion of the study (e.g., life-threatening disease likely to limit survival to less than 3 years)
* Any other reason that, in the opinion of the site investigator, would interfere with required study related evaluations (e.g. uncontrolled comorbidity, life expectancy \< 1 year)
* Patients who have household contact with varicella-susceptible pregnant women or severely immunosuppressed individuals without history of primary varicella.