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Seroprevalence of Coxiella burnetii (Q fever) exposure in humans on Reunion Island

Jaubert J., Naze F., Camuset G., Larrieu S., Pascalis H., Guernier V., Naty N., Bertolotti A., Manaquin R., Mboussou Y., Atiana L., Picot S., Filleul L., Tortosa P., Cardinale E., Gérardin P.. 2019. Open Forum Infectious Diseases, 6 (7) : 4 p..

DOI: 10.1093/ofid/ofz227

After the documentation of sporadic cases of Q fever endocarditis, we conducted a serosurvey to assess Coxiella burnetii exposure on Reunion Island. Two hundred forty-one stored frozen human sera were analyzed using an immunofluorescence assay. The weighted seroprevalence of Q fever was of 6.81% (95% confidence interval, 4.02%¿9.59%). Despite the absence of infection in youths <20 years of age, exposure was not driven by age or by gender. There was a spatial disparity in exposure across the island, with higher prevalence being reported in regions where ruminant farms are present. The seroprevalence pattern suggests that Q fever is endemic on Reunion Island.

Mots-clés : coxiella burnetii; fièvre q; endocardite; enquête sanitaire; immunofluorescence; santé; maladie de l'homme; Épidémiologie; réunion; france; séroprévalence

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