This webpage will be updated weekly on Wednesdays to reflect any new data. WEB Wild Bird Avian Influenza Surveillance Dashboard USDA FAQs and resources about coronavirus COVID-19. WEB Updated March 27 2024 CDC has developed new interim recommendations for prevention monitoring and public health. Avian influenza AI is caused by an influenza type A virus which can infect poultry. WEB Distribution of Highly Pathogenic Avian Influenza in North America 20212022 Map Avian influenza USDA Information on Avian..
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This webpage will be updated weekly on Wednesdays to reflect any new data. WEB Wild Bird Avian Influenza Surveillance Dashboard USDA FAQs and resources about coronavirus COVID-19. WEB Updated March 27 2024 CDC has developed new interim recommendations for prevention monitoring and public health. Avian influenza AI is caused by an influenza type A virus which can infect poultry. WEB Distribution of Highly Pathogenic Avian Influenza in North America 20212022 Map Avian influenza USDA Information on Avian..
**Avian Influenza: Understanding the Virus and Its Subtypes** **Introduction** Avian influenza, also known as bird flu, is a disease caused by infection with avian influenza Type A viruses. These viruses are highly contagious and can cause significant morbidity and mortality in birds. **Subtypes of AH7 Viruses** There are nine known subtypes of AH7 viruses: * AH7N1 * AH7N2 * AH7N3 * AH7N4 * AH7N5 * AH7N6 * AH7N7 * AH7N8 * AH7N9 **Transmission and Symptoms** Avian influenza viruses are primarily transmitted through direct contact with infected birds or their secretions. Humans can become infected through contact with infected birds or their contaminated environments. Symptoms of avian influenza in birds can include: * Respiratory distress * Swelling of the head and neck * Diarrhoea * Lethargy **Public Health Concerns** While avian influenza is primarily a concern for birds, it can also pose a risk to human health. Some strains of avian influenza virus have the potential to cause severe respiratory illness in humans, including: * Avian influenza A (H5N1) * Avian influenza A (H7N9) **Prevention and Control** Prevention and control of avian influenza include: * Biosecurity measures on poultry farms * Vaccination of poultry * Surveillance for infected birds * Early diagnosis and reporting of outbreaks * Protective measures for humans who interact with infected birds **Current Situation** In 2024, highly pathogenic avian influenza A (H5N1) has been detected in animals in several countries around the world. This strain poses a significant threat to poultry and wild bird populations, and is closely monitored by health authorities. Understanding the different subtypes of avian influenza viruses and their potential impact on both birds and humans is critical for effective prevention and control strategies.
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**Bird Flu Outbreak: Highly Pathogenic Avian Influenza H5N1 Virus Affects Animals** In a recent development, Avian Influenza, commonly known as Bird Flu, has been detected in animals across the globe. This outbreak is caused by the Highly Pathogenic Avian Influenza (HPAI) H5N1 virus. Bird Flu is a highly contagious disease that primarily affects birds, especially wild waterfowl. However, some strains of the virus can also infect domestic poultry, such as chickens, turkeys, and ducks. The HPAI H5N1 virus is particularly concerning due to its high pathogenicity, meaning it can cause severe illness and even death in affected birds. The virus can spread rapidly through poultry farms, leading to significant economic losses for the poultry industry. In addition to affecting poultry, HPAI H5N1 viruses can also pose a threat to human health. While human infections with the H5N1 virus are relatively rare, they can occur through close contact with infected birds or contaminated poultry products. Human infections can range in severity from mild respiratory illness to severe pneumonia and even death. Health authorities are urging poultry farmers and the public to take necessary precautions to prevent the spread of the virus. These measures include: * Implementing strict biosecurity measures on poultry farms * Isolating sick or infected birds * Reporting suspected cases to veterinary authorities promptly * Practicing good hygiene when handling poultry or poultry products * Cooking poultry products thoroughly before consumption Public health officials are also monitoring the situation closely to assess the potential risk to human health. They recommend avoiding contact with sick or dead birds and seeking medical attention if you develop any symptoms after exposure to poultry. The outbreak of the HPAI H5N1 virus highlights the importance of early detection and containment efforts to mitigate its impact on both animal health and human well-being. By following recommended precautions and adhering to good biosecurity practices, we can help prevent the spread of this potentially devastating disease.
**Breakthroughs in Influenza Vaccine Development** **Live Attenuated H5 Vaccine Candidates** Researchers have developed several live attenuated vaccine candidates against H5 avian influenza viruses, offering potential protection against highly contagious bird flu strains. **Efficacy Assessment of H9N2 Inactivated Vaccine** A recombinant H9N2 avian influenza virus inactivated vaccine has undergone efficacy testing, demonstrating its potential to prevent infection and disease caused by this zoonotic pathogen. **Reassortant H3N2 Vaccine with 4xM2e** A reassortant influenza H3N2 virus vaccine containing 4xM2e and a current strain-specific HA has been generated, enhancing its protective capabilities. **Live Attenuated Reassortant Vaccines for Human Vaccination** Live attenuated reassortant vaccines have been approved in the U.S. for human vaccination to control influenza viruses, providing long-lasting immunity. **Recombination Risk with H9N2 Virus** The H9N2 avian influenza virus carries a high risk of recombination with other viruses, underscoring the need for effective vaccines to prevent its spread. **Eurasian H5 Viruses Posing a Threat** Since December 2014, Eurasian-origin highly pathogenic avian influenza H5 viruses have emerged, including H5N1 and H5N2, requiring urgent vaccine development. **LAIV: A Promising Vaccine Strategy** Live attenuated cold-adapted reassortant influenza vaccine (LAIV) has emerged as a promising vaccine strategy due to its ability to induce robust immune responses. **H5N2 Vaccine Strain for Chicken Protection** Scientists have generated a reassortant avian influenza virus H5N2 vaccine strain capable of protecting chickens against this deadly virus, offering hope for poultry farmers.
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