Jaeger A., Lecollinet S., Beck C., Bastien M., Le Corre M., Dellagi Koussay, Pascalis Hervé, Boulinier T., Lebarbenchon C. (2016). Serological evidence for the circulation of flaviviruses in seabird populations of the western Indian Ocean. Epidemiology and Infection, 144 (3), p. 652-660. ISSN 0950-2688.
Titre du document
Serological evidence for the circulation of flaviviruses in seabird populations of the western Indian Ocean
Jaeger A., Lecollinet S., Beck C., Bastien M., Le Corre M., Dellagi Koussay, Pascalis Hervé, Boulinier T., Lebarbenchon C.
Source
Epidemiology and Infection, 2016,
144 (3), p. 652-660 ISSN 0950-2688
Birds play a central role in the epidemiology of several flaviviruses of concern for public and veterinary health. Seabirds represent the most abundant and widespread avifauna in the western Indian Ocean and may play an important role as host reservoirs and spreaders of arthropod-borne pathogens such as flaviviruses. We report the results of a serological investigation based on blood samples collected from nine seabird species from seven islands in the Indian Ocean. Using a commercial competitive enzyme-linked immunosorbent assay directed against the prototypic West Nile flavivirus, antibodies against flaviviruses were detected in the serum of 47 of the 855 seabirds tested. They were detected in bird samples from three islands and from four bird species. Seroneutralization tests on adults and chicks suggested that great frigatebirds (Fregata minor) from Europa were infected by West Nile virus during their non-breeding period, and that Usutu virus probably circulated within bird colonies on Tromelin and on Juan de Nova. Real-time polymerase chain reactions performed on bird blood samples did not yield positive results precluding the genetic characterization of flavivirus using RNA sequencing. Our findings stress the need to further investigate flavivirus infections in arthropod vectors present in seabird colonies.
Plan de classement
Ecologie, systèmes aquatiques [036]
;
Entomologie médicale / Parasitologie / Virologie [052]
;
Sciences du monde animal [080]
Description Géographique
OCEAN INDIEN OUEST ; REUNION ; EUROPA ILE ; JUAN DE NOVA ILE ; TROMELIN ILE ; SEYCHELLES
