Seroprevalence of Coxiella burnetii (Q fever) Exposure in Humans on Reunion Island
2019
Jaubert, Julien | Naze, Florence | Camuset, Guillaume | Larrieu, Sophie | Pascalis, Hervé | Guernier, Vanina | Naty, Nadège | Bertolotti, Antoine | Manaquin, Rodolphe | Mboussou, Yoan | Atiana, Laura | Picot, Sandrine | Tortosa, Pablo | Cardinale, Eric | Gérardin, Patrick
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.
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