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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 ...
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.
Highly pathogenic H5N1 avian influenza in a human appears to be far worse, killing over 50% of humans reported infected with the virus, although it is unknown how many cases (with milder symptoms) go unreported. In one case, a boy with H5N1 experienced diarrhea followed rapidly by a coma without developing respiratory or flu-like symptoms. [41]
A second California child has tested positive for H5N1 bird flu in Marin County; ... The child suffered from mild respiratory symptoms, and no one else in the child's family or day care was ...
In December, a HPAI H5N1 subtype of clade 2.3.4.4b was found in a captive Asian black bear and in wild and captive birds in a wildlife park in France. [17] A human case of H5N1 was reported in the U.S. in April, "though this detection may have been the result of contamination of the nasal passages with the virus rather than actual infection."
With reports of the first human death from bird flu in the US, some Americans are feeling an uncomfortable flashback to the early days of Covid-19, when infectious disease experts were talking ...
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.