Bird Flu | Bird Flu | CDC - Centers for Disease Control and Prevention
6 days ago · Infections with highly pathogenic avian influenza A(H5N1) viruses in mammals have been reported. Bird Flu in Dairy Cows A multi-state outbreak of HPAI A(H5N1) bird flu in dairy cows was first reported on March 25, 2024.
H5 Bird Flu: Current Situation | Bird Flu | CDC - Centers for Disease ...
6 days ago · Public health professionals and laboratorians can visit CDC's avian influenza (bird flu) information for public health partners for the latest guidance. Learn more. Get a seasonal flu vaccine Seasonal flu vaccination will not prevent infection with bird flu viruses, but can reduce the risk of getting sick with human influenza viruses and thus ...
About Bird Flu | Bird Flu | CDC - Centers for Disease Control and ...
Dec 30, 2024 · Bird flu is a disease caused by avian influenza A viruses that usually spread between birds, not people. One subtype of bird flu, caused by avian influenza A(H5) virus, is spreading worldwide in wild birds and causing sporadic outbreaks in U.S. poultry and dairy cows.
Prevention and Antiviral Treatment of Avian Influenza A Viruses in ...
Jul 19, 2024 · Seasonal flu vaccines do not provide protection against avian influenza A viruses. CDC has developed H5 candidate vaccine viruses (CVVs) that are nearly identical or, in many cases, identical to the hemagglutinin (HA) protein of recently detected clade 2.3.4.4b avian influenza A(H5N1) viruses in humans, birds and other mammals.
Avian Influenza Type A | Bird Flu | CDC
Dec 20, 2024 · Avian influenza A viruses are classified into the following two categories: low pathogenicity avian influenza (LPAI) A viruses, and highly pathogenic avian influenza (HPAI) A viruses. The categories refer to molecular characteristics of a virus and the virus' ability to cause disease and mortality in chickens in a laboratory setting .
Highly Pathogenic Avian Influenza A(H5N1) Virus: Interim ...
Dec 26, 2024 · Summary. The purpose of this guidance is to outline CDC's recommendations for preventing exposures to highly pathogenic avian influenza (HPAI) A(H5N1) viruses, infection prevention and control measures including the use of personal protective equipment, testing, antiviral treatment, patient investigations, monitoring of exposed persons (including persons exposed to sick or dead wild and ...
Clinician Brief: Evaluating and Managing Patients Exposed to …
Sep 18, 2024 · Swine influenza A viruses circulate among pigs worldwide. Avian influenza A viruses circulate among wild birds worldwide and can infect domestic poultry and other birds to cause disease referred to as avian influenza. Avian influenza A viruses may also infect other animals such as mammals, including dairy cattle, to cause a wide range of disease.
Current Situation: Bird Flu in Humans | Bird Flu | CDC
Jun 3, 2024 · More Information About Contemporary Avian Influenza A(H5N1) Viruses. USDA has publicly posted the genetic sequences of avian influenza A(H5N1) viruses found in U.S. wild birds and poultry. The viruses are from clade 2.3.4.4b A, which is the most common avian influenza A(H5N1) virus worldwide at this time. Comparing information about these ...
CDC A(H5N1) Bird Flu Response Update September 27, 2024
Sep 27, 2024 · CDC also continues to monitor flu surveillance data using CDC's enhanced, nationwide summer surveillance strategy, especially in areas where avian influenza A(H5N1) viruses have been detected in dairy cows or other animals, for any unusual trends, including in flu-like illness, conjunctivitis, or influenza virus activity. Overall, for the most ...
USDA Reported H5N1 Bird Flu Detections in Poultry - CDC
6 days ago · Highly pathogenic avian influenza (HPAI) A(H5) viruses have been detected in U.S. wild aquatic birds, commercial poultry and backyard or hobbyist flocks beginning in January 2022. The latest H5N1 bird flu detections in backyard and commercial poultry by state and county are provided on this webpage.