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Outlook for a dengue vaccine.

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Clinical Microbiology and Infection : the Official Publication of the European Society of Clinical Microbiology and Infectious Diseases
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Summary

Developing a dengue vaccine is challenging due to four virus types and safety concerns. A promising tetravalent vaccine shows protection against three types, with an effective dengue vaccine anticipated within ten years.

Keywords:
Dengueclinical trialdengue epidemiologydengue haemorrhagic feverdengue vaccine

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Area of Science:

  • Tropical medicine
  • Vaccinology
  • Virology

Background:

  • Dengue presents a growing global health challenge, particularly in tropical and subtropical regions.
  • The existence of four distinct dengue virus serotypes complicates vaccine development.
  • Live-attenuated vaccine candidates must demonstrate safety, specifically avoiding the induction of severe dengue hemorrhagic fever.

Purpose of the Study:

  • To review the progress and challenges in developing a dengue vaccine.
  • To assess the efficacy and safety of current leading vaccine candidates.

Main Methods:

  • Review of clinical trial data for dengue vaccine candidates.
  • Analysis of vaccine performance against different dengue virus serotypes.
  • Evaluation of safety profiles, focusing on severe dengue complications.

Main Results:

  • One tetravalent chimeric vaccine candidate, derived from a yellow fever virus strain, has advanced to large-scale clinical trials.
  • This vaccine demonstrated efficacy against dengue virus types 1 and 3, but not type 2.
  • No vaccine-induced dengue hemorrhagic fever was reported for this candidate.

Conclusions:

  • A tetravalent dengue vaccine candidate has shown partial success in clinical trials.
  • Further development is needed to achieve complete protection against all four dengue serotypes.
  • An effective dengue vaccine is anticipated within the next decade, addressing a significant public health need.