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Source WHO Confirmed Human Cases of H5N1 "[T]he incidence of human cases peaked, in each of the three years in which cases have occurred, during the period roughly corresponding to winter and spring in the northern hemisphere. If this pattern continues, an upsurge in cases could be anticipated starting in late 2006 or early 2007."
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 was also detected in a pig in Oregon, the first ever reported case in the USA. [96] Meanwhile, by late November human cases of H5N1 in the USA increased to over fifty for the year with infections being reported in seven states. [97] On November 7, the CDC reported asymptomatic bird flu infection in 4 workers at dairy farms.
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.
Health officials reported the first "severe" human case of the H5N1 virus on December 18. MATTHEW HATCHER/AFP via Getty Images A bird flu outbreak has ravaged the world's birds since 2020 and ...
The U.S. has recorded at least 66 human cases of H5N1. All except for the one in Louisiana were mild, with respiratory symptoms or pink eye. ... In May 2024, CDC began reporting additional ...
Source WHO Confirmed Human Cases of H5N1 "[T]he incidence of human cases peaked, in each of the three years in which cases have occurred, during the period roughly corresponding to winter and spring in the northern hemisphere. If this pattern continues, an upsurge in cases could be anticipated starting in late 2006 or early 2007."
A child in California is presumed to have H5N1 bird flu, according to the San Francisco Department of Public Health (SFDPH).. As of Dec. 23, there had been 36 confirmed human cases of bird flu in ...