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In 2005, when a markedly less-lethal strain in Northern Vietnam was responsible for most of the cases reported worldwide, only 42 of 97 people confirmed by the WHO to be infected with H5N1 died — a 43% fatality rate. In 2006, the case fatality ratio was higher among the WHO-confirmed cases, with 79 deaths among 114 confirmed cases. [26 ...
The case fatality rate varies by strain of bird flu. H7N9, another type of bird flu known to infect humans, has a lower fatality rate of about 40%, research shows .
The first person to have a severe case of H5N1 bird flu in the United States has died, according to the Louisiana Department of Health. ... That would give the virus a 50% case fatality rate ...
The U.S. has experienced its first death from bird flu (H5N1). The death happened in a Louisiana patient who contracted H5N1 after being exposed to a combination of a non-commercial backyard flock ...
Avian influenza, also known as avian flu or bird flu, is a disease caused by the influenza A virus, which primarily affects birds but can sometimes affect mammals including humans. [1] Wild aquatic birds are the primary host of the influenza A virus, which is enzootic (continually present) in many bird populations.
Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus, which causes the disease avian influenza (often referred to as "bird flu"). It is enzootic (maintained in the population) in many bird populations, and also panzootic (affecting animals of many species over a wide area). [ 1 ]
Of the 863 reported H5N1 bird flu cases reported worldwide between 2003 and 2021, 456 ended in death, according to data from the World Health Organization (WHO). That’s a mortality rate of ...
In September, Egypt and Sudan joined the list of nations seeing a resurgence of bird deaths due to H5N1. [citation needed] In November and December, South Korea and Vietnam joined the list of nations seeing a resurgence of bird deaths due to H5N1; February/March 2006 - A dead cat infected with the H5N1 bird flu virus was found in Germany. [26]