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<p>Influenza D virus (IDV) is an emerging pathogen associated with respiratory diseases in cattle, contributing to significant economic losses in the livestock industry. Despite its global spread, the epidemiology of IDV in Senegal remains largely unexplored. This study aims to assess the seroprevalence of IDV and identify key factors associated with its infection in cattle within the peri-urban areas of Dakar and Thiès. A cross-sectional study was conducted, with 168 cattle sampled from intensive, semi-intensive, and extensive farming systems. Blood samples were tested using a hemagglutination inhibition assay to determine antibody titres against IDV. Logistic regression was used to identify potential factors associated with the seropositivity of cattle in the study area. The results showed an overall seroprevalence of 31.5%. Larger herds (≥ 50 cattle) had a significantly higher seroprevalence (47.1%) compared to smaller herds (27.6%, <i>p</i> &lt; 0.05), while cattle from Senegal had a higher seroprevalence (53.3%) than imported animals (24.2%, <i>p</i> &lt; 0.05). Smaller herds and mixed-breed cattle were found to have lower risks of infection, while Senegalese-origin cattle exhibited a much higher risk of infection. This study provides the first evidence of IDV circulation in Senegal, offering important insights into key risk factors and biosecurity measures for cattle farms. It also highlights the need for IDV to be included in national livestock health policies to better manage its spread and protect public health.</p>

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Seroprevalence and associated risk factors of influenza D virus infection in cattle in the peri-urban areas of Dakar and Thiès, Senegal

  • 期刊论文

  • 发表日期：

    2025年2月4日

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  • Mireille Catherine Kadja,
  • Daouda Ouedraogo,
  • Laibané Dieudonné Dahourou,
  • Edmond Onidje,
  • Souhaibou Sourokou Sabi,
  • Mariette F. Ducatez,
  • Benjamin Obukowho Emikpe,
  • Rianatou Bada Alambedji

摘要

Influenza D virus (IDV) is an emerging pathogen associated with respiratory diseases in cattle, contributing to significant economic losses in the livestock industry. Despite its global spread, the epidemiology of IDV in Senegal remains largely unexplored. This study aims to assess the seroprevalence of IDV and identify key factors associated with its infection in cattle within the peri-urban areas of Dakar and Thiès. A cross-sectional study was conducted, with 168 cattle sampled from intensive, semi-intensive, and extensive farming systems. Blood samples were tested using a hemagglutination inhibition assay to determine antibody titres against IDV. Logistic regression was used to identify potential factors associated with the seropositivity of cattle in the study area. The results showed an overall seroprevalence of 31.5%. Larger herds (≥ 50 cattle) had a significantly higher seroprevalence (47.1%) compared to smaller herds (27.6%, p < 0.05), while cattle from Senegal had a higher seroprevalence (53.3%) than imported animals (24.2%, p < 0.05). Smaller herds and mixed-breed cattle were found to have lower risks of infection, while Senegalese-origin cattle exhibited a much higher risk of infection. This study provides the first evidence of IDV circulation in Senegal, offering important insights into key risk factors and biosecurity measures for cattle farms. It also highlights the need for IDV to be included in national livestock health policies to better manage its spread and protect public health.