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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]
Most people infected with bird flu in the U.S. have had mild symptoms. Symptoms of H5N1 birth flu infection in humans may include pink eye, fever, fatigue, cough, muscle aches, sore throat, nausea ...
Since 2003, 954 confirmed cases of human H5N1 have been reported to the World Health Organization, and about half of those people have died. The case fatality rate is approximately 52%, per the CDC .
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 ...
In the event of an outbreak of human H5N1, the main antiviral drugs recommended are neuraminidase inhibitors, such as zanamivir (Relenza) and oseltamivir (Tamiflu). These drugs can reduce the severity of symptoms if taken soon after infection and can also be taken as prophylaxis to decrease the risk of infection. [55] [56] [57] [58]
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.
H5N1, a highly pathogenic ... was present in several continents as early as 1996. Since reaching North America in late 2021, this strain has impacted wild animals, commercial livestock, and humans ...
In mammals, including humans, A/H5N1 influenza (whether LPAI or HPAI) is rare. Symptoms of infection vary from mild to severe, including fever, diarrhoea, and cough. [6] 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. [9]