Abstract
Herpes zoster (HZ) is a common, painful and debilitating disease caused by the reactivation of latent varicella-zoster virus in ganglia. This clinical event occurs more frequently in the elderly and those who are immunocompromised. The most common complication of HZ is post-herpetic neuralgia (PHN) which is responsible for the highest HZ-related burden of illness and is challenging to treat. Due to the important clinical and economic impact of HZ and PHN, and the suboptimal treatments that are currently available, HZ vaccination is an important approach to reduce the burden of illness. Currently, one-dose, live-attenuated vaccine is licensed in the United States and Europe to prevent HZ and it is included in some national immunization programs. The clinical efficacy, safety and tolerability of the vaccine has been demonstrated in two large phase III clinical trials, involving more than 38,000 and 22,000 individuals aged ≥60 and 50–59 years, respectively. This comprehensive review summarizes the extensive “real-world” effectiveness and safety data from both immunocompetent and immunocompromised individuals. These data confirm those from the clinical trials, supporting the use of HZ vaccine in clinical practice and provide evidence that the current recommendations for immunocompromised individuals should be revised. Funding: Funding for the editorial assistance, article processing charges, and open access fee for this publication was provided by Sanofi Pasteur MSD.
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