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Article Dans Une Revue Comparative Immunology, Microbiology and Infectious Diseases Année : 2024

Equine influenza outbreak in Eastern of Algeria in 2021: The first introduction of Florida Clade 1 to Maghreb area

Résumé

We have performed an equine influenza (EI) serological study of the equine population in Algeria by testing 298 serum samples collected between February and August 2021 from 5 provinces. The results were obtained performing an NP-ELISA. Our results revealed that 49.3% (147/298) samples positive for antibodies to EI (H3N8). During this study and after a gap of one decade an outbreak of EI was reported in Algeria in the first week of March 2021. The disease was confirmed by virus detection from the nasal swabs (n = 39) by qRT-PCR and by identifying 5 EI seroconversion. The virus sequences were identified as H3N8 by sequencing the haemagglutinin (HA) and neuraminidase (NA) genes. Alignment of HA1 amino acid sequence confirmed that viruses belong to Clade 1 of the Florida sublineage in the American lineage. This study indicate the first detection of FC1 strain of EIV in Maghreb area.

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Virologie
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Dates et versions

hal-04512733 , version 1 (20-03-2024)

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Copyright (Tous droits réservés)

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Hadda Kareche, José-Carlos Valle-Casuso, Anthony Madeline, Delphine Froger, Fanny Lecouturier, et al.. Equine influenza outbreak in Eastern of Algeria in 2021: The first introduction of Florida Clade 1 to Maghreb area. Comparative Immunology, Microbiology and Infectious Diseases, 2024, 104, pp.102109. ⟨10.1016/j.cimid.2023.102109⟩. ⟨hal-04512733⟩
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