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. 2014 Jan;108(1):57-9.
doi: 10.1093/trstmh/trt110. Epub 2013 Dec 18.

Dengue outbreaks: a constant risk for Reunion Island. Results from a seroprevalence study among blood donors

Sophie Larrieu  1 , Alain Michault, Dominique Polycarpe, François Schooneman, Eric D'Ortenzio, Laurent Filleul
Affiliations

Dengue outbreaks: a constant risk for Reunion Island. Results from a seroprevalence study among blood donors

Sophie Larrieu et al. Trans R Soc Trop Med Hyg. 2014 Jan.

Abstract

Background: Immunity against dengue virus (DENV) on Reunion Island could play an important role in the risk of dengue outbreaks but is rather unknown. A study was performed to estimate seroprevalence of antibodies against DENV among blood donors.

Methods: An age- and sex-stratified sample of 1825 sera was randomly selected.

Results: Overall seroprevalence was 3.1% (95% CI: 2.2-3.9%); seroprevalence increased with age and was much higher in women than in men.

Conclusion: The low level of herd immunity is consistent with the absence of an endemic circulation of DENV, and makes it probable that Reunion Island will face future outbreaks.

Keywords: Dengue; Outbreaks; Reunion Island; Risk; Seroprevalence.

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