Anaplasma phagocytophilum in urban and peri-urban passerine birds in Ile-de-France.

Autor: Rouxel C; ANSES, INRAE, École nationale vétérinaire d'Alfort (EnvA), UMR BIPAR, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France., Etienne A; ANSES, INRAE, École nationale vétérinaire d'Alfort (EnvA), UMR BIPAR, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France., Arné P; EnvA, Centre hospitalier universitaire vétérinaire - Faune sauvage (Chuv-FS), 94700, Maisons-Alfort, France; EnvA, UPEC, ANSES, Dynamyc research group EA 7380, 94700, Maisons-Alfort, France., Le Barzic C; EnvA, Centre hospitalier universitaire vétérinaire - Faune sauvage (Chuv-FS), 94700, Maisons-Alfort, France., Girault G; ANSES, INRAE, EnvA, Université Paris-Est, UMR Virologie, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France., Boulouis HJ; ANSES, INRAE, École nationale vétérinaire d'Alfort (EnvA), UMR BIPAR, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France., Haddad N; ANSES, INRAE, École nationale vétérinaire d'Alfort (EnvA), UMR BIPAR, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France., Lagrée AC; ANSES, INRAE, École nationale vétérinaire d'Alfort (EnvA), UMR BIPAR, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France., Deshuillers PL; ANSES, INRAE, École nationale vétérinaire d'Alfort (EnvA), UMR BIPAR, Laboratoire de Santé Animale, 94700 Maisons-Alfort, France. Electronic address: pierre.deshuillers@vet-alfort.fr.
Jazyk: angličtina
Zdroj: Ticks and tick-borne diseases [Ticks Tick Borne Dis] 2024 Jul; Vol. 15 (4), pp. 102350. Date of Electronic Publication: 2024 May 09.
DOI: 10.1016/j.ttbdis.2024.102350
Abstrakt: Wild animals in general, birds in particular, play a key role in transporting ticks and propagating tick-borne pathogens. Several studies have confirmed the infection of birds with Anaplasma phagocytophilum, with overall prevalence varying widely from country to country and/or study to study. This zoonotic bacterium, transmitted mainly by ticks of the genus Ixodes, is responsible for granulocytic anaplasmosis in humans (HGA) and domestic animals (cats, dogs, horses). The disease is also called tick-borne fever (TBF) in ruminants. Extremely rare in the USA, TBF is very common in Europe, where it causes economic losses in livestock. Conversely, HGA is well established in the USA whereas only a few less severe cases have been observed in Europe. Current typing techniques support the existence of multiple variants with differences in virulence/pathogenicity and tropism for certain tick and host species. However, epidemiological cycles remain difficult to characterize in Europe. Several studies describe a cycle apparently involving only birds in Europe, but no such study has been conducted in mainland France. Our objectives were to search for A. phagocytophilum in passerine birds in the Ile-de-France region and to explore their diversity using groEL and ankA gene typing and multilocus sequence typing (MLST). Various tissues (spleen, liver, and skin) were collected from cadavers of 680 passerines between March and December 2021. The presence of A. phagocytophilum was detected by qPCR Taqman targeting the msp2 gene. Three blackbirds (Turdus merula) were found positive, representing detection rates of 0.4 % in all birds tested and 3.3 % in blackbirds. The higher frequency of detection in blackbirds could be at least partially explained by their lifestyle, as they feed on the ground. Analysis of the results of groEL and ankA typing and MLST from positive blackbirds support the hypothesis that the avian A. phagocytophilum strains in Ile-de-France are distinct from those found in mammals, and that they form their own cluster in Europe.
Competing Interests: Declarations of competing interest The authors declare that they have no competing interests.
(Copyright © 2024 The Author(s). Published by Elsevier GmbH.. All rights reserved.)
Databáze: MEDLINE
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