**Avian Influenza Surveillance Dashboard Update** The USDA's Wild Bird Avian Influenza Surveillance Dashboard will be updated weekly on Wednesdays to reflect the latest data on avian influenza in North America. **New CDC Recommendations** The CDC has developed new interim recommendations for the prevention, monitoring, and public health response to avian influenza. These recommendations are based on the latest scientific data and best practices. **What is Avian Influenza?** Avian influenza (AI) is caused by an influenza type A virus that can infect poultry and other birds. The virus can cause a range of clinical signs, from mild respiratory symptoms to severe disease and death. **Distribution of Highly Pathogenic Avian Influenza** The USDA is currently tracking the distribution of highly pathogenic avian influenza (HPAI) in North America. HPAI is a highly contagious and deadly form of AI that can cause significant economic losses to the poultry industry. **USDA Resources** The USDA provides a variety of resources on avian influenza, including information on prevention, control, and response. These resources are available online at the USDA website. **For More Information** For more information on avian influenza, please visit the following websites: * USDA Wild Bird Avian Influenza Surveillance Dashboard: https://www.aphis.usda.gov/aphis/ourfocus/animalhealth/animal-disease-information/avian/avian-influenza/wild-birds * CDC Avian Influenza: https://www.cdc.gov/flu/avianflu/index.htm * USDA Avian Influenza: https://www.usda.gov/avian-influenza
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**Avian Influenza Surveillance Dashboard Update** The USDA's Wild Bird Avian Influenza Surveillance Dashboard will be updated weekly on Wednesdays to reflect the latest data on avian influenza in North America. **New CDC Recommendations** The CDC has developed new interim recommendations for the prevention, monitoring, and public health response to avian influenza. These recommendations are based on the latest scientific data and best practices. **What is Avian Influenza?** Avian influenza (AI) is caused by an influenza type A virus that can infect poultry and other birds. The virus can cause a range of clinical signs, from mild respiratory symptoms to severe disease and death. **Distribution of Highly Pathogenic Avian Influenza** The USDA is currently tracking the distribution of highly pathogenic avian influenza (HPAI) in North America. HPAI is a highly contagious and deadly form of AI that can cause significant economic losses to the poultry industry. **USDA Resources** The USDA provides a variety of resources on avian influenza, including information on prevention, control, and response. These resources are available online at the USDA website. **For More Information** For more information on avian influenza, please visit the following websites: * USDA Wild Bird Avian Influenza Surveillance Dashboard: https://www.aphis.usda.gov/aphis/ourfocus/animalhealth/animal-disease-information/avian/avian-influenza/wild-birds * CDC Avian Influenza: https://www.cdc.gov/flu/avianflu/index.htm * USDA Avian Influenza: https://www.usda.gov/avian-influenza
**Avian Influenza: Symptoms, Transmission, and Concerns** Avian influenza, commonly known as bird flu, is a viral infection that affects domestic poultry and various bird species worldwide. Caused by avian influenza type A viruses, it can spread naturally among wild aquatic birds. **Symptoms** While bird flu primarily affects birds, humans can also become infected through contact with infected birds or their secretions. Symptoms in humans can range from mild to severe and include: * Fever over 100.4°F (38°C) * Headache * Cough * Shortness of breath or difficulty breathing * Muscle aches * Joint pain * Fatigue * Nasal congestion or runny nose * Eye infections (conjunctivitis) In severe cases, bird flu can lead to: * Sepsis (severe bloodstream infection) * Respiratory distress syndrome (acute lung failure) * Multi-organ failure **Transmission** Bird flu can spread to humans through: * Contact with infected birds or their bodily fluids * Consuming undercooked poultry products * Inhaling contaminated air in poultry farms or markets **Detection and Prevention** Detecting bird flu in humans requires laboratory testing. Early detection is crucial for prompt treatment and reducing the risk of severe complications. To prevent infection, follow these precautions: * Avoid contact with sick or dead birds. * Cook poultry products thoroughly to an internal temperature of 165°F (74°C). * Practice good hygiene by washing hands after handling poultry or bird products. * Wear protective clothing when working in poultry farms or markets. **Concerns** Bird flu remains a global concern due to its potential to cause severe illness in humans. Additionally, it can result in significant economic losses in the poultry industry and disruptions to the global food supply chain. Continuous surveillance, vaccination efforts, and public awareness are essential to control and prevent the spread of bird flu. If you experience symptoms associated with avian influenza, seek medical attention promptly.
**New Insights into the Transmission and Lifecycle of Bird Flu** Researchers have identified two primary modes of transmission for avian influenza A (bird flu) viruses: from infected birds to other animals and potentially to humans. **Transmission Pathways** * **Direct contact:** Infected birds shed virus particles in feces, saliva, and respiratory droplets, which can be transmitted to other birds or animals through contact with contaminated surfaces or bodily fluids. * **Indirect contact:** Virus-contaminated objects, such as food, water, or equipment, can serve as vehicles for transmission to other animals. **Lifecycle of Influenza Viruses** The influenza virus lifecycle consists of several key stages: * **Entry:** The virus penetrates the host cell and releases its genetic material (vRNPs) into the nucleus. * **Replication:** The virus uses the host cell's machinery to replicate its genetic material and assemble new virus particles. * **Assembly:** New virus particles are assembled within the host cell. * **Release:** Mature virus particles bud from the host cell membrane and are released into the environment. **Influenza A Virus** Influenza A virus (IAV) is the primary cause of influenza in humans, commonly known as the flu. It infects billions of people annually, leading to a range of symptoms from mild fever to severe respiratory complications. **Cross-Species Transmission** Avian influenza viruses (AIVs) can occasionally cross into new species, such as chickens or pigs. These zoonotic events can pose a significant health risk, as AIVs have the potential to cause severe disease in humans. **Hybrid Virus Transmission Patterns** Researchers have analyzed the transmission patterns of H5N1 and H5N2 influenza viruses among avian species. Their findings suggest that distinct groups of birds played different roles in virus transmission, with some species acting as amplifiers and others as potential reservoirs.
WEB Avian influenza AI viruses are classified by a combination of two groups of proteins. WEB It was the primary step toward the classification of highly pathogenic avian influenza virus. WEB The family is categorized into 3 main genera of influenza types A B and C and 2 unknown genera..
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