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Dengue type 3 virus, Saint Martin, 2003-2004

Christophe N Peyrefitte1, Boris A M Pastorino, Maël Bessaud

  • 1Institut de Médecine Tropicale du Service de Santé des Armées, Marseille Armées, France. publi.viro@laposte.net

Emerging Infectious Diseases
|May 14, 2005
PubMed

Insights

Dengue type 3 virus spread during a 2003-2004 outbreak on Saint Martin island. Genetic analysis revealed its origin linked to viruses from Martinique.

Area of Science:

  • Virology
  • Epidemiology
  • Public Health

Background:

  • Saint Martin island experienced a dengue virus outbreak during the winter of 2003-2004.
  • Dengue type 3 had not been detected on the island for the previous three years.

Purpose of the Study:

  • To describe the spread and origin of dengue virus during the 2003-2004 outbreak on Saint Martin island.
  • To identify the specific dengue serotype involved in the outbreak.

Main Methods:

  • Isolation of dengue viruses from patients presenting clinical symptoms.
  • Genome sequencing and phylogenetic analysis of the isolated dengue viruses.

Main Results:

  • Dengue type 3 viruses were successfully isolated from six patients.
  • Genomic analysis indicated a shared origin between the Saint Martin dengue type 3 viruses and those previously found in Martinique.

Conclusions:

  • The 2003-2004 outbreak on Saint Martin was caused by Dengue type 3.
  • The virus likely originated from Martinique, highlighting potential viral transmission routes in the French West Indies.

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