While any avian influenza infection in a human can cause severe disease, the recent bird flu outbreaks have elevated various concerns.
Whenever avian influenza viruses are circulating in poultry, wild birds, or mammals, there is a risk for humans due to exposure to infected animals or contaminated environments.
Globally, eleven human influenza A H5N1 2.3.4.4b infections have been reported during 2022-2023.
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