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- H5 Bird Flu: Current Situation | Bird Flu | CDC
CDC is using its flu surveillance systems to monitor for H5 bird flu activity in people On July 7, 2025, CDC streamlined H5 bird flu updates with routine influenza data updates and updated reporting cadences to reflect the current public health situation
- 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 wide area) [1]
- First Human Dies of Rare H5N5 Bird Flu Strain. Here’s What You Need to . . .
H5N1 bird flu has been circulating in U S wildlife since late 2021 but has caused only one human fatality Now a different type of bird flu has also caused a death
- Influenza: A (H5N1) - World Health Organization (WHO)
H5N1 is one of several influenza viruses that causes a highly infectious respiratory disease in birds called avian influenza (or "bird flu") Infections in mammals, including humans, have also been documented
- Highly Pathogenic Avian Influenza A(H5N1) Virus Infections in Humans
Highly pathogenic avian influenza A (H5N1) viruses have caused widespread infections in dairy cows and poultry in the United States, with sporadic human cases We describe characteristics of
- H5N1 Influenza - Animal and Plant Health Inspection Service
The H5N1 strain of highly pathogenic avian influenza (HPAI) is present in wild birds worldwide and is causing outbreaks in U S domestic birds and dairy cattle
- Avian Influenza (Bird Flu): H5N1, Causes, Symptoms Treatment
A type of influenza A virus, often H5N1 in humans, causes bird flu The virus can infect your upper respiratory tract and lungs, and sometimes spread to other parts of your body like your brain
- H5N1 outbreaks surge across the Americas - PAHO
The Pan American Health Organization (PAHO) reported that avian influenza A(H5N1) continues to circulate in the Americas, with new outbreaks detected in birds, mammals, and sporadic human infections linked to exposure to the virus Clade 2 3 4 4b—the region’s predominant strain since 2021
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