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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]
Usually other differences also exist. Currently, there is no human-adapted form of H5N1 influenza, so all humans who have caught it so far have caught avian H5N1. Human flu symptoms usually include fever, cough, sore throat, muscle aches, conjunctivitis and, in severe cases, severe breathing problems and pneumonia that may be fatal.
The true fatality rate may be lower because some cases with mild symptoms may not have been identified as H5N1. [3] H5N1 infections in humans are generally caused by bird to human transmission of the virus. Until May 2006, the WHO estimate of the number of human to human transmissions had been "two or three cases".
Amid an ongoing outbreak of bird flu among poultry and dairy cows, the United States has recorded its first human death due the virus known as avian influenza A or H5N1. The Louisiana patient died ...
61 cases of human bird flu in the U.S. in 2024. Since the start of 2024, human H5N1 bird flu cases have been reported in the following states, according to the latest CDC data: California: 34 ...
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.
Here are five things you should know about bird flu. What type of virus is it and how does it spread? H5N1 comes from a group of four flu, or influenza, viruses: A, B, C and D. The strain called ...
A significant effect of H5N1 has been personal fear concerning the unknown, even by those most in-the-know. Dr. David Nabarro, chief avian flu coordinator for the United Nations, describes himself as "quite scared"; says avian flu has too many unanswered questions; and if the disease starts spreading to humans, borders will close, airports will ...