Avian Influenza A (H5N1) Information for Health Professionals
Influenza testing at clinical or commercial laboratories can detect influenza A, but hemagglutinin subtyping must be done to detect influenza A (H5N1) virus (or rule it out by detecting H3 or H1 influenza A) in an influenza A positive specimen.
Avian Influenza A (h5n1) - California Department of Public Health
CDC H5N1 Bird Flu: Current Situation Summary . CDC Highly Pathogenic Avian Influenza A (H5N1) Virus in Animals: Interim Recommendations for Prevention, Monitoring, and Public Health Investigations . FDA Open Letter to Health Partners Regarding HPAI and Intrastate Raw Milk Recommendations (PDF) – June 6, 2024.
Dec 13, 2024 · H5N1 influenza cases have been mild, although a severe case has been reported in Louisiana and Canada. No human-to-human transmission of H5N1 influenza virus has been detected in the United States. Human infections with avian influenza viruses have occurred most often after close or lengthy
Highly Pathogenic Avian Influenza - California Department of …
Historically, viruses of H5 and H7 subtypes have been more likely to become highly pathogenic. In December 2021, highly pathogenic avian influenza (HPAI) H5N1 of Eurasian-lineage was detected in domestic poultry and wild birds along the Atlantic coast of Canada.
Avian Influenza Type A | Bird Flu | CDC
Dec 20, 2024 · The most frequently identified subtypes of avian influenza A viruses that have caused human infections are H5, H7 and H9 viruses. Specifically, A(H5N1) and A(H7N9) viruses have caused the majority of avian influenza A virus infections reported in people, with HPAI A(H5N6) and LPAI A(H9N2) viruses also causing human infections in recent years.
H5N1 Bird Flu | Kern County, CA
Dec 19, 2024 · Avian Influenza A (H5N1) is a type of bird flu that has been spreading among wild birds, poultry, and dairy cattle. Illness among people has been relatively mild, but symptoms may include conjunctivitis (red eyes), fever, chills, cough, sore throat, runny or stuffy nose, muscle or body ache, headache, and fatigue.
Technical Update: Summary Analysis of the Genetic Sequence of a …
Dec 10, 2024 · Upon obtaining full-length NA and NP genes, CDC was able to perform a comprehensive phylogenetic analysis, which showed that the virus was very similar to viruses detected in both dairy cattle and poultry as well as to A(H5N1) viruses from previous human infections in dairy workers in California.
Highly pathogenic avian influenza (HPAI) H5N1 was first detected along the Atlantic Coast of Canada and the United States in December 2021 and January 2022, respectively. Following the initial detection, the virus has spread across the continental U.S. and Canada causing illness and death in wild and domestic birds.
Accelerated Subtyping of Influenza A in Hospitalized Patients
2 days ago · Therefore, using tests that identify the seasonal influenza A virus subtype will help identify whether infection with a seasonal influenza A virus is present. If a test result is positive for influenza A virus but negative for seasonal influenza A virus subtypes [i.e., A(H1) and A(H3)], the virus detected might be a novel influenza A virus ...
Avian influenza: Bird flu spread triggers state of emergency in ...
Dec 20, 2024 · Why has California declared a state of emergency? The virus H5N1 is a subtype of avian influenza, or bird flu. The virus is spread primarily through wild and domestic birds. However, it...
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