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Träfflista för sökning "WFRF:(Oostvogels Lidia) srt2:(2018)"

Sökning: WFRF:(Oostvogels Lidia) > (2018)

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  • Schwarz, Tino F., et al. (författare)
  • Persistence of immune response to an adjuvanted varicella-zoster virus subunit vaccine for up to year nine in older adults
  • 2018
  • Ingår i: Human Vaccines & Immunotherapeutics. - : TAYLOR & FRANCIS INC. - 2164-5515 .- 2164-554X. ; 14:6, s. 1370-1377
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: In adults aged 60years, two doses of the herpes zoster subunit vaccine (HZ/su; 50 mu g varicella-zoster virus glycoprotein E [gE] and AS01(B) Adjuvant System) elicited humoral and cell-mediated immune responses persisting for at least six years. We assessed immunogenicity nine years post-initial vaccination.Methods: This open extension study (NCT02735915) followed 70 participants who received two HZ/su doses in the initial trial (NCT00434577). Blood samples to assess the cellular (intracellular cytokine staining) and humoral (ELISA) immunity were taken at year nine post-initial vaccination.Results: Participants' mean age at dose 1 was 72.3years. The fold increases over pre-vaccination in the mean frequency of gE-specific CD4+ T-cells expressing 2 activation markers plateaued from year four post-dose 1 until year nine. Anti-gE antibody geometric mean concentrations plateaued and remained above pre-vaccination levels from year four onwards. Immunogenicity at year nine was similar across age strata (60-69, 70years) and confirmed statistical prediction model results using data for up to year six. Further modeling using all data up to year nine predicted immune responses would remain above the pre-vaccination level up to year 15.Conclusion: In adults aged 60years, HZ/su-induced immunogenicity remained above pre-vaccination levels for at least nine years post-initial vaccination.Summary: After vaccination with HZ/su, both cell mediated and humoral immunity remained above pre-vaccination levels up to year 9 regardless of age group. Immune responses are predicted to remain above baseline up to 15years post initial vaccination.
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