First serological evidence of West Nile virus infection in wild birds in Northern Algeria

While the epidemiology of Flaviviruses has been extensively studied in most of the Mediterranean basin, little is known about the current situation in Algeria. In order to detect the circulation of West Nile (WNV) and Usutu viruses (USUV) in Kabylia, 165 sera were collected from two wild birds speci...

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Bibliographic Details
Published in:Comparative immunology, microbiology and infectious diseases microbiology and infectious diseases, 2020-04, Vol.69, p.101415-101415, Article 101415
Main Authors: Medrouh, Bachir, Lafri, Ismail, Beck, Cécile, Leulmi, Hamza, Akkou, Madjid, Abbad, Lynda, Lafri, Mohamed, Bitam, Idir, Lecollinet, Sylvie
Format: Article
Language:English
Subjects:
Algeria
Antibodies
Bacteriology
Birds
Cardiology and cardiovascular system
Emerging diseases
Epidemiology
Human health and pathology
Infectious diseases
Life Sciences
Microbiology and Parasitology
Neutralization
Parasitology
Prevalence
Serology
Song
Usutu virus
Virology
Viruses
West Nile virus
Wild bird
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Summary:While the epidemiology of Flaviviruses has been extensively studied in most of the Mediterranean basin, little is known about the current situation in Algeria. In order to detect the circulation of West Nile (WNV) and Usutu viruses (USUV) in Kabylia, 165 sera were collected from two wild birds species, namely the long distance migrant Turdus philomelos (song thrush) (n = 92) and the resident Passer domesticus (house sparrow) (n = 73). A total of 154 sera were first analyzed by commercial competition ELISA. WNV and USUV micro-neutralization tests were performed on all c-ELISA positive sera and all samples with poor volume. Overall, 7.8 % (CI95 %: 3.5–11.9) were positive by c-ELISA. Positive results were detected in 12.5 % (CI95 %:5.6–19.4) of song thrushes and 1.5 % (CI95 %: 0.0–4.5) for sparrow. Micro-neutralization tests revealed an overall seroprevalence of 6.7 % for WNV (CI95 %: 2.9–10.3), Neutralizing antibodies were found in 8.7 % (CI95 %: 3.0–14.4) for song thrushes and in 4.1 % (CI95 %: 0.0–8.7) of sparrows. The current study demonstrates significant seroprevalence of WNV antibodies in wild birds in Algeria.
ISSN:0147-9571
1878-1667
DOI:10.1016/j.cimid.2020.101415