4 天之前 · H5 bird flu is causing outbreaks in wild birds and poultry, other animals and sporadic human cases.

2024年12月20日 · 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.

2024年12月20日 · 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 .

As of January 23, the U.S. Department of Agriculture reported that there were 98 infected flocks within the past 30 days, with more than 15 million birds affected. Avian influenza is so contagious ...

Avian influenza, also known as avian flu or bird flu, is a disease caused by the influenza A virus, which primarily affects birds but can sometimes affect mammals including humans. [1] Wild aquatic birds are the primary host of the influenza A virus, which is enzootic (continually present) in many bird populations.

2024年5月16日 · Avian influenza, sometimes known as bird flu, is a disease caused by a virus that mainly affects birds but can also affect mammals, including humans. It primarily spreads from infected birds to humans through close contact with birds or contaminated environments, such as in backyard poultry farm settings and at markets where birds are sold.

2024年6月8日 · Bird flu, also called avian influenza, is caused by influenza type A virus infections in bird species. Depending on the strain, bird flu may cause the bird to have no symptoms, mild illness, serious illness or lead to the death of the bird. Bird flu rarely infects humans.