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Headline: Medical Life Sciences News, 1/5/2025
In a recent study published in the journal Emerging Infectious Diseases, researchers screened samples from almost 1,000 Mongolian horses for Influenza A(H5N1). Study findings revealed that at least nine horses were asymptomatic carriers of the virus, the first confirmed evidence of bird flu infections in horses. Geographic and Ecological Context: The study sampled horses from two distinct regions in Mongolia—wetlands in Arkangai Province and dry areas in Bulgan Province—providing diverse ecological contexts for analyzing H5N1 spillover risks.
The study highlights the high likelihood of Influenza A virus (IAV) spillover to horses and other equids, particularly in regions like North America, where horses frequently encounter infected cows. The researchers noted that ecological conditions in these regions, such as high-density horse populations and endemic equine influenza virus (EIV), further increase the risk of viral reassortment.
Moreover, the study cautions against the potential reassortment of Influenza A(H5N1) with equine influenza virus (EIV), which could result in a novel influenza epidemic. It recommends that horse breeding premises conduct frequent serological surveys of their animals, ensuring the early detection and control of potential viral outbreaks.
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