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H5 Bird Flu: Current Situation | Bird Flu | CDC
H5 bird flu is widespread in wild birds worldwide and is causing outbreaks in poultry and U.S. dairy cows with several recent human cases in U.S. dairy and poultry workers.
Bird Flu | Bird Flu | CDC
Current Situation H5 bird flu is causing outbreaks in wild birds and poultry, other animals and sporadic human cases.
About Bird Flu | Bird Flu | CDC
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.
Signs and Symptoms of Bird Flu in People | Bird Flu | CDC
Key points Most human cases of bird flu, caused by avian influenza A (H5) virus, in the United States have been mild, so far, and most were in people who had known exposure to sick or infected animals. The severity of illness associated with bird flu has ranged from mild to severe, including death.
Bird Flu: Causes and How It Spreads | Bird Flu | CDC
Bird flu is a disease caused by avian influenza A viruses that usually spread between birds. Avian influenza A viruses have caused sporadic human infections in multiple countries, including the United States.
Avian Influenza Type A | Bird Flu | CDC
While the current public health risk is low, CDC is watching the situation carefully and working with states to monitor people with animal exposures. Information about the latest developments around avian influenza A (H5N1) is available at Bird Flu Current Situation Summary.
Global Summary of Recent Human Cases of H5N1 Bird Flu
Between January 1 and August 4, 2025, 26 human infections with avian influenza A (H5N1) viruses (H5 bird flu) have been detected globally, of which 23 were identified in 7 countries outside of the United States, including 11 infections that resulted in death.
Current Situation: H5N1 Bird Flu in People | Bird Flu | CDC
CDC maintains a H5 Bird Flu: Current Situation page that has updated totals of human cases of H5N1 bird flu that have been identified in the United States, including a breakdown by exposure source and location.
Current Situation: Bird Flu in Wild Birds | Bird Flu | CDC
Avian influenza (bird flu) refers to a disease caused by infection with avian (bird) influenza (flu) Type A viruses. Bird flu viruses can infect birds' respiratory and gastrointestinal tract and have been identified in more than 100 species of wild birds worldwide.
CDC Report on Missouri H5N1 Serology Testing | Bird Flu | CDC
To date, human-to-human spread of H5 bird flu has not been identified in the United States. CDC believes the immediate risk to the general public from H5N1 bird flu remains low, but people with exposure to infected animals are at higher risk of infection.
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