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A Phase 2, Placebo-controlled, Randomised, Observer-blinded Trial To Evaluate The Safety, Tolerability And Immunogenicity Of A Clostridium Difficile Vaccine Administered As A 3-dose Regimen In Healthy Adults Aged 50 To 85 Years

Trial Profile

A Phase 2, Placebo-controlled, Randomised, Observer-blinded Trial To Evaluate The Safety, Tolerability And Immunogenicity Of A Clostridium Difficile Vaccine Administered As A 3-dose Regimen In Healthy Adults Aged 50 To 85 Years

Status: Completed
Phase of Trial: Phase II

Latest Information Update: 14 Sep 2021

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At a glance

  • Drugs PF 6425090 (Primary) ; Toxoids
  • Indications Clostridium difficile infections
  • Focus Adverse reactions
  • Acronyms toxoid-alone study
  • Sponsors Pfizer
  • Most Recent Events

    • 03 Sep 2021 Results assessing the safety and immunogenicity data from two clinical studies (QS-21 study NCT02052726 and toxoid-alone study NCT02117570) that evaluated the use of alternative formulations of this vaccine candidate in healthy adults, published in the Vaccine.
    • 05 Dec 2017 Status changed from active, no longer recruiting to completed.
    • 14 Dec 2015 Planned number of patients changed from 185 to 749 as reported by ClinicalTrials.gov.

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