Quote:
Study participants were followed for at least 30 months after the second dose through monthly contacts and yearly clinic visits. The primary objective was to evaluate the efficacy of Shingrix compared with placebo in reducing the risk of shingles in adults 70 years and older. The average age of the study participants was 75.6 years. The average follow-up time was 3.7 years, and herpes zoster occurred in 23 patients who were administered Shingrix and 223 in the placebo group. Overall vaccine efficacy against herpes zoster was 89.8% (P<.001) and for PHN was 88.8%.5