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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.
Between 2003 and December 2024, the World Health Organization has recorded 963 cases of confirmed H5N1 influenza, leading to 465 deaths. [33] The true fatality rate may be lower because some cases with mild symptoms may not have been identified as H5N1. [10] On January 6, 2025, the first death from avian influenza in the United States was recorded.
In June 2006 WHO predicted an upsurge in human deaths due to H5N1 during late 2006 or early 2007 following a summer/fall lull in most countries, as H5N1 appears to be somewhat seasonal in nature. In July and August 2006 significantly increased numbers of bird deaths due to H5N1 were recorded in Cambodia , China , Laos , Nigeria , and Thailand ...
What to know after the first H5N1 death in the US. Brenda Goodman, CNN. January 8, 2025 at 10:25 AM. The CDC is urging increased testing in an attempt to spot bird flu infections in people sooner.
CDC officials have said cases of severe H5N1 illness and deaths are not unexpected. The current outbreak was first detected in dairy cattle in March, and it has since spread to more than 900 herds ...
Bird flu has claimed its first human death in the US. A Louisiana patient died from a severe case of the H5N1 avian influenza , state health officials reported on Monday.
Between 2003 and December 2024, the World Health Organization has recorded 963 cases of confirmed H5N1 influenza, leading to 465 deaths. [48] The true fatality rate may be lower because some cases with mild symptoms may not have been identified as H5N1. [49]
The first bird-flu related death has been reported in the US, according to the Louisiana department of health, where the death occurred. ... The H5N1 virus is the major strain circulating among ...