[Show abstract][Hide abstract] ABSTRACT: To evaluate the general safety of zoster vaccine (ZV) in adults ≥60 years old.
Subjects were enrolled in a 1:1 ratio to receive 1 dose of ZV or placebo. Subjects were followed for serious adverse experiences (SAEs) for 42 days (primary follow-up period) and 182 days (secondary follow-up period) postvaccination. Relative-risks (ZV/placebo) for SAEs during both safety periods were calculated. Study period: 17-Sep‑2007 to 09-Jan-2009.
Overall, 5,983 subjects received ZV and 5,997 received placebo. Within the primary 42-day follow-up period, 84 ZV subjects and 67 placebo subjects reported SAEs. The estimated risk of SAEs within 42 days was 1.41% for ZV versus 1.12% for placebo, with a relative-risk of 1.26 (95% CI 0.91,1.73); indicating no statistically significant difference between groups, meeting the pre-specified success criterion. During the 182-day follow-up period, 340 ZV subjects and 300 placebo subjects reported SAEs. The estimated risk of SAEs within 182 days was 5.68% for ZV versus 5.01% for placebo, with a relative-risk of 1.13 (95% CI 0.98,1.32), indicating no statistically significant difference between groups. Two subjects in the ZV group reported SAEs deemed by the investigator to be vaccine-related (uveitis and sciatica; onset Day 5 and 4, respectively). One subject in the placebo group reported a SAE deemed by the investigator to be vaccine-related (lumbar radiculopathy; onset Day 51). There were 24 fatal SAEs in the ZV group and 17 in the placebo group (relative risk = 1.41; CI: 0.77, 2.60); 6 and 5, respectively, with SAE onset during the primary 42-day follow-up period. No deaths were deemed vaccine-related.
ZV and placebo groups had similar safety profiles in terms of SAEs during the primary (Day 1 to 42) and secondary (Day 1 to 182) follow-up periods.
Human vaccines 11/2011; 7(11):1130-6. · 3.14 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: To evaluate the safety and immunogenicity of ZOSTAVAX administered concomitantly with inactivated influenza vaccine or sequentially in adults aged 50 and older.
Randomized, blinded, placebo-controlled study.
Thirteen U.S. and seven European study sites.
Three hundred eighty-two concomitantly, 380 sequentially vaccinated subjects.
The concomitant vaccination group received influenza vaccine and ZOSTAVAX at separate injection sites on Day 1 and placebo at Week 4. The nonconcomitant vaccination group received influenza vaccine and placebo at separate injection sites on Day 1 and ZOSTAVAX at Week 4.
Primary safety endpoints: vaccine-related serious adverse experiences (AEs) within 28 days postvaccination (PV); and diary card-prompted local and systemic AEs. Primary immunogenicity endpoints: geometric mean titer (GMT) and geometric mean fold rise (GMFR) from baseline of varicella-zoster virus (VZV) antibody (Ab) at 4 weeks PV according to glycoprotein enzyme-linked immunosorbent assay (gpELISA) and GMT of influenza Ab for the three vaccine strains (2005-2006 influenza season) at 4 weeks PV according to hemagglutination inhibition assay. Secondary immunogenicity endpoint: influenza seroconversion rates (SCRs).
No serious AEs related to ZOSTAVAX were observed during the study. VZV Ab GMTs 4 weeks PV for the concomitant and sequential groups were 554 and 597 gpELISA U/mL, respectively. The estimated VZV Ab GMT ratio was 0.9 (95% confidence interval (CI)=0.8-1.0), indicating noninferior (P<.001 for the null hypothesis of GMT ratio <0.67) responses. Estimated VZV Ab GMFR from baseline in the concomitant group was 2.1 (95% CI=2.0-2.3), indicating acceptable fold rise. Estimated GMT ratios (concomitant/sequential) for influenza strains A(H1N1), A(H3N2), and B were 0.9 (95% CI=0.8-1.1), 1.1 (95% CI=0.9-1.3), and 0.9 (95% CI=0.8-1.1), respectively, and SCRs were comparable across both groups, with more than 85% achieving titers of 1:40 or greater, meeting regulatory criteria.
ZOSTAVAX and influenza vaccine given concomitantly are generally well tolerated in adults aged 50 and older. Ab responses were similar whether ZOSTAVAX and influenza vaccine were given concomitantly or sequentially.
Journal of the American Geriatrics Society 11/2007; 55(10):1499-507. · 3.98 Impact Factor