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Safety and Reactogenicity of Canarypox ALVAC-HIV (vCP1521) and HIV-1 gp120 AIDSVAX B/E Vaccination in an Efficacy Trial in Thailand

Author

Listed:
  • Punnee Pitisuttithum
  • Supachai Rerks-Ngarm
  • Valai Bussaratid
  • Jittima Dhitavat
  • Wirach Maekanantawat
  • Swangjai Pungpak
  • Pravan Suntharasamai
  • Sirivan Vanijanonta
  • Sorachai Nitayapan
  • Jaranit Kaewkungwal
  • Michael Benenson
  • Patricia Morgan
  • Robert J O'Connell
  • Jeffrey Berenberg
  • Sanjay Gurunathan
  • Donald P Francis
  • Robert Paris
  • Joseph Chiu
  • Donald Stablein
  • Nelson L Michael
  • Jean-Louis Excler
  • Merlin L Robb
  • Jerome H Kim

Abstract

Background: A prime-boost vaccination regimen with ALVAC-HIV (vCP1521) administered intramuscularly at 0, 4, 12, and 24 weeks and gp120 AIDSVAX B/E at 12 and 24 weeks demonstrated modest efficacy of 31.2% for prevention of HIV acquisition in HIV-uninfected adults participating in a community-based efficacy trial in Thailand. Methodology/Principal Findings: Reactogenicity was recorded for 3 days following vaccination. Adverse events were monitored every 6 months for 3.5 years, during which pregnancy outcomes were recorded. Of the 16,402 volunteers, 69% of the participants reported an adverse event any time after the first dose. Only 32.9% experienced an AE within 30 days following any vaccination. Overall adverse event rates and attribution of relatedness did not differ between groups. The frequency of serious adverse events was similar in vaccine (14.3%) and placebo (14.9%) recipients (p = 0.33). None of the 160 deaths (85 in vaccine and 75 in placebo recipients, p = 0.43) was assessed as related to vaccine. The most common cause of death was trauma or traffic accident. Approximately 30% of female participants reported a pregnancy during the study. Abnormal pregnancy outcomes were experienced in 17.1% of vaccine and 14.6% (p = 0.13) of placebo recipients. When the conception occurred within 3 months (estimated) of a vaccination, the majority of these abnormal outcomes were spontaneous or elective abortions among 22.2% and 15.3% of vaccine and placebo pregnant recipients, respectively (p = 0.08). Local reactions occurred in 88.0% of vaccine and 61.0% of placebo recipients (p

Suggested Citation

  • Punnee Pitisuttithum & Supachai Rerks-Ngarm & Valai Bussaratid & Jittima Dhitavat & Wirach Maekanantawat & Swangjai Pungpak & Pravan Suntharasamai & Sirivan Vanijanonta & Sorachai Nitayapan & Jaranit , 2011. "Safety and Reactogenicity of Canarypox ALVAC-HIV (vCP1521) and HIV-1 gp120 AIDSVAX B/E Vaccination in an Efficacy Trial in Thailand," PLOS ONE, Public Library of Science, vol. 6(12), pages 1-10, December.
  • Handle: RePEc:plo:pone00:0027837
    DOI: 10.1371/journal.pone.0027837
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