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Bird flu is a scary illness with a high mortality rate. But so far, infections in the U.S. have been relatively mild—until now. A patient in Louisiana has been hospitalized with a severe case of ...
People who have close contact with infected birds or animals, either through their job or recreationally, are at higher risk of contracting H5N1, per the CDC. Bird flu symptoms in humans range ...
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.
Symptoms vary from mild to severe (including death), but as of December 2024 there have been no observed instances of sustained human-human transmission. [ 4 ] [ 17 ] [ 30 ] There are a number of factors that generally prevent avian influenza viruses from causing epidemics in humans or other mammals.
H5N1 influenza virus is a type of influenza A virus which mostly infects birds. H5N1 flu is a concern because its global spread may constitute a pandemic threat. The yardstick for human mortality from H5N1 is the case-fatality rate (CFR); the ratio of the number of confirmed human deaths resulting from infection of H5N1 to the number of those confirmed cases of infection with the virus.
Scientists also know a lot more about H5N1 bird flu than they did the SARS-CoV-2 virus, and the US has been preparing for the threat of a new flu outbreak for a long time. Still, the virus is ...
Symptoms of infection vary from mild to severe, including fever, diarrhea, and cough. [5] Human infections with A/H5N1 virus have been reported in 23 countries since 1997, resulting in severe pneumonia and death in about 50% of cases. [8] Between 2003 and November 2024, the World Health Organization has recorded 948 cases of confirmed H5N1 ...
The other human case of H5N1 in the U.S. in 2022 was a mild infection as well, Babcock adds. Symptoms of bird flu in humans According to the CDC and experts, the reported signs and symptoms of ...