Efficacy of the Herpes Zoster Subunit Vaccine in Adults 70 Years of Age or Older
- PMID:27626517
- DOI: 10.1056/NEJMoa1603800
Efficacy of the Herpes Zoster Subunit Vaccine in Adults 70 Years of Age or Older
Abstract
Background: A trial involving adults 50 years of age or older (ZOE-50) showed that the herpes zoster subunit vaccine (HZ/su) containing recombinant varicella-zoster virus glycoprotein E and the AS01B adjuvant system was associated with a risk of herpes zoster that was 97.2% lower than that associated with placebo. A second trial was performed concurrently at the same sites and examined the safety and efficacy of HZ/su in adults 70 years of age or older (ZOE-70).
Methods: This randomized, placebo-controlled, phase 3 trial was conducted in 18 countries and involved adults 70 years of age or older. Participants received two doses of HZ/su or placebo (assigned in a 1:1 ratio) administered intramuscularly 2 months apart. Vaccine efficacy against herpes zoster and postherpetic neuralgia was assessed in participants from ZOE-70 and in participants pooled from ZOE-70 and ZOE-50.
Results: In ZOE-70, 13,900 participants who could be evaluated (mean age, 75.6 years) received either HZ/su (6950 participants) or placebo (6950 participants). During a mean follow-up period of 3.7 years, herpes zoster occurred in 23 HZ/su recipients and in 223 placebo recipients (0.9 vs. 9.2 per 1000 person-years). Vaccine efficacy against herpes zoster was 89.8% (95% confidence interval [CI], 84.2 to 93.7; P<0.001) and was similar in participants 70 to 79 years of age (90.0%) and participants 80 years of age or older (89.1%). In pooled analyses of data from participants 70 years of age or older in ZOE-50 and ZOE-70 (16,596 participants), vaccine efficacy against herpes zoster was 91.3% (95% CI, 86.8 to 94.5; P<0.001), and vaccine efficacy against postherpetic neuralgia was 88.8% (95% CI, 68.7 to 97.1; P<0.001). Solicited reports of injection-site and systemic reactions within 7 days after injection were more frequent among HZ/su recipients than among placebo recipients (79.0% vs. 29.5%). Serious adverse events, potential immune-mediated diseases, and deaths occurred with similar frequencies in the two study groups.
Conclusions: In our trial, HZ/su was found to reduce the risks of herpes zoster and postherpetic neuralgia among adults 70 years of age or older. (Funded by GlaxoSmithKline Biologicals; ZOE-50 and ZOE-70 ClinicalTrials.gov numbers,NCT01165177 andNCT01165229 .).
Comment in
- Preventing Shingles and Its Complications in Older Persons.Neuzil KM, Griffin MR.Neuzil KM, et al.N Engl J Med. 2016 Sep 15;375(11):1079-80. doi: 10.1056/NEJMe1610652.N Engl J Med. 2016.PMID:27626522No abstract available.
- In adults ≥ 70 years of age, an adjuvanted herpes zoster subunit vaccine reduced herpes zoster at a mean 3.7 years.Sacks HS.Sacks HS.Ann Intern Med. 2017 Jan 17;166(2):JC5. doi: 10.7326/ACPJC-2017-166-2-005.Ann Intern Med. 2017.PMID:28114461No abstract available.
- [Herpes zoster vaccination efficacy in adults 70 years of age or older : ZOE-70 study].Salzberger B, Nitschmann S.Salzberger B, et al.Internist (Berl). 2017 May;58(5):522-524. doi: 10.1007/s00108-017-0222-3.Internist (Berl). 2017.PMID:28357465German.No abstract available.
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