Efficacy, Safety and Immunogenicity of GSK Biologicals' HZ/su Vaccine GSK1437173A in a Phase IIIb, Open-label, Long-term Follow-up Study (ZOE-LTFU) of Studies 110390/113077 (ZOSTER-006/022) and Assessment of Additional Doses in Older Adults

The purpose of this study was a long-term follow-up of the two studies 110390 and 113077 (ZOSTER-006/022) to assess the efficacy, safety, and immunogenicity persistence of GSK Biologicals' Herpes Zoster subunit (HZ/su) vaccine and included an assessment of 1 or 2 additional doses in two subgroups of older adults.