ETIDIOH - NEW

  Abstract Highly pathogenic avian influenza A(H5N1) clade 2.3.4.4b viruses have infected >1,000 herds of dairy cattle and hundreds of poultry flocks in the United States since the beginning of 2024. Seventy human cases have been reported during that period, mainly through occupational exposure . Although prior influenza A(H1N1)pdm09 virus infection has been shown to confer protection against influenza A(H5N1) clade 2.3.4.4b virus infection in the ferret model, it remains unclear if influenza vaccines , known to elicit a less potent and narrower cross-reactive immune response, can achieve a similar effect. In this article, we demonstrate that immunization with commercially available human seasonal influenza vaccines also confers partial protection against disease caused by H5N1 clade 2.3.4.4b virus in ferrets , which is partially associated with the presence of cross-reactive antibodies targeting H5N1 virus antigens. Source: US Centers for Disease Control and Prevention,  h...

  09/09/2025 -  Foz do Iguaçu, Brazil  In an unprecedented response to the rapid global spread of high pathogenicity avian influenza (HPAI), stakeholders and experts from across the poultry sector, public health, science, and policy spheres have convened in Brazil in a landmark meeting .  This first-ever global multisectoral dialogue aims to forge coordinated defense against the escalating threat to animal and human health and agricultural livelihoods. Avian influenza, commonly known as bird flu , is a highly contagious viral disease that primarily infects birds. The virus belongs to the Type A influenza family, which is known for its ability to mutate and change rapidly. Since 2020, HPAI has expanded rapidly across continents , devastating poultry flocks , impacting biodiversity , trade and food security , and raising concerns over its potential to spark a human pandemic . The currently circulating avian influenza panzootic is now widespread, and represents one of t...