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 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. FDA Questions and Answers Regarding Milk Safety During HPAI Outbreaks .
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
Accelerated Subtyping of Influenza A in Hospitalized Patients
Jan 16, 2025 · 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 ...
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.
H5N1 Bird Flu | Kern County, CA
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.
H5N1 bird flu | Public Health | County of Santa Clara
Jan 16, 2025 · H5N1 bird flu is a specific subtype of influenza virus that is widespread in wild birds. H5N1 bird flu is also called highly pathogenic avian influenza (HPAI). H5N1 bird flu can infect wild birds, poultry, and some mammals such as cows, cats, and humans.
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.
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...
Influenza A virus subtype H5N1 - Wikipedia
Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus, which causes the disease avian influenza (often referred to as "bird flu"). It is enzootic (maintained in the population) in many bird populations, and also panzootic (affecting animals of many species over a …