Crimean-Congo Hemorrhagic Fever Virus Antibodies among Livestock on Corsica, France, 2014–2016
Sébastien Grech-Angelini
, Renaud Lancelot, Olivier Ferraris, Christophe Nicolas Peyrefitte, Nathalie Vachiery, Aurélie Pédarrieu, Armelle Peyraud, Valérie Rodrigues, Denise Bastron, Geneviève Libeau, Bernard Fernandez, Philippe Holzmuller, Renata Servan de Almeida, Vincent Michaud, Noël Tordo, Loïc Comtet, Raphaëlle Métras, François Casabianca, and Laurence Vial
Author affiliations: Groupement Technique Vétérinaire de Corse, Ghisonaccia, France (S. Grech-Angelini); Unité Mixte de Recherche de Biologie Moléculaire et d’Immunologie Parasitaires, Agence Nationale de Sécurité Sanitaire de l’Alimentation de l’Environnement et du Travail, Institut National de la Recherche Agronomique, École Nationale Vétérinaire d’Alfort, Maisons-Alfort, France (S. Grech-Angelini); Institut National de la Recherche Agronomique, UR045 Laboratoire de Recherches sur le Développement de l’Élevage, Corte, France (S. Grech-Angelini, F. Casabianca); Unité Mixte de Recherche Animal Santé Territoires Risques et Écosystèmes, Centre de Coopération International en Recherche Agronomique pour le Développement, Institut National de la Recherche Agronomique, Université de Montpellier, Montpellier, France (R. Lancelot, N. Vachiery, A. Pédarrieu, A. Peyraud, V. Holzmuller, R.S. de Almeida, V. Michaud, R. Métras, L. Vial); Institut de Recherche Biomédicale des Armées, Brétigny-sur-Orge, France (O. Ferraris, C.N. Peyrefitte); Institut Pasteur, Dakar, Senegal (C.N. Peyrefitte); Unité des Virus Émergents, Université Aix Marseille, IRD190, INSERM1207, IHU Méditerranée Infection, Marseille, France (C.N. Peyrefitte); World Health Organization Collaborative Centre for Arboviruses and Viral Haemorrhagic Fevers, and World Organisation for Animal Health Reference Laboratory for Crimean-Congo Haemorrhagic; Fever Virus and Rift Valley Virus, Institut Pasteur, Paris, France (N. Tordo); Institut Pasteur de Guinée, Conakry, Guinea (N. Tordo); ID.Vet, Montpellier (L. Comtet)
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Figure
Figure. Prevalence and probability of nondetection of antibody against Crimean-Congo hemorrhagic fever virus (CCHFV) in ruminants, Corsica, France, 2014–2016. A) Spatial variability of CCHFV antibody prevalence. Inset indicates location of the island of Corsica in relation to France. B) Probability of nondetection of CCHFV antibody in areas where estimated prevalence was null. Three different probabilities were estimated in accordance with different assumptions of the estimated true seroprevalence, corresponding with the 10% quantile (2.8% seroprevalence), 25% quantile (5.0% seroprevalence), and 50% quantile (14.3% seroprevalence). In this analysis, a Voronoi diagram was used to divide the island into regions; the centroids of Voronoi polygons corresponded to municipalities where blood samples were collected.
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