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A/H5N1 virus can also infect mammals (including humans) that have been exposed to infected birds; in these cases, symptoms are frequently severe or fatal. [2] A/H5N1 virus is shed in the saliva, mucus, and feces of infected birds; other infected animals may shed bird flu viruses in respiratory secretions and other body fluids (such as milk). [3]
H5N1 pre-pandemic vaccines exist in quantities sufficient to inoculate a few million people [4] and might be useful for priming to "boost the immune response to a different H5N1 vaccine tailor-made years later to thwart an emerging pandemic". [5] H5N1 pandemic vaccines and technologies to rapidly create them are in the H5N1 clinical trials ...
New Scientist said that an H5N1 virus infecting a human could acquire all the abilities it needs to become a pandemic virus by swapping genes with a human virus infecting the same individual. [ 100 ] On December 6, the USDA announced a new mandate to test the national milk supply for bird flu as part of efforts to combat the virus's spread ...
The bird flu that’s been making news in the United States is a virus called H5N1. Some flu viruses carried by birds cause only mild infections and are classified as low-pathogenic viruses.
Most human cases of bird flu in North America have been mild, a fact that’s underscored by a new study of the first 46 confirmed human H5N1 infections in the United States this year.
Since March, the U.S. Centers for Disease Control and Prevention has said that 52 people have been infected by the H5N1 virus. Dairy cattle were the source for 30 of those cases, poultry for 21.