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9 lut 2023 · Avian influenza viruses can be transmitted directly from wild birds to domestic poultry or indirectly e.g. through contaminated material. The virus spreads directly from bird to bird via airborne transmission or indirectly, through faecal contamination of material, feathers or feed.
- H7N9
The major source of infection with influenza A(H7N9) for...
- H7N9
24 maj 2022 · Avian influenza A (bird flu) viruses may be transmitted from infected birds to other animals, and potentially to humans, in two main ways: Directly from infected birds or from avian influenza A virus-contaminated environments. Through an intermediate host, such as another animal.
16 maj 2024 · It primarily spreads from infected birds to humans through close contact with birds or contaminated environments, such as in backyard poultry farm settings and at markets where birds are sold. There have also been limited reports of transmission from other infected animals to humans.
In birds, avian influenza viruses are shed in the faeces and respiratory secretions. They can all be spread through direct contact with secretions from infected birds, especially through faeces or through contaminated feed and water.
3 maj 2024 · However, avian influenza A viruses are very contagious among birds, and some of these viruses can sicken and even kill certain domesticated bird species, including chickens, ducks and turkeys. Infected birds can shed avian influenza A viruses in their saliva, nasal secretions, and feces.
3 paź 2023 · Currently circulating zoonotic influenza viruses have not yet demonstrated sustained person-to-person transmission. As influenza viruses have a natural reservoir in aquatic birds they are impossible to eradicate. Zoonotic influenza infections will continue to occur.
While it mostly affects domestic and wild birds, it can rarely also affect people, though there is no evidence that the disease has yet acquired the ability to spread from person to person. Since 2020, in the Region, there have been 5 human cases due to clade 2.3.4.4b reported to WHO.
