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An outbreak of H5N1 killed 70% of Southern elephant seal pups born in the 2023 breeding season. In surveyed areas of Península Valdés, Argentina, seal mortality rates reached 96%. [7] In February 2024 it was estimated that the outbreak of H5N1 in South America had killed at least 600,000 wild birds and 50,000 mammals since 2022. [7]
Influenza A/H5N1 was first recorded in a small outbreak among poultry in Scotland [74] in 1959, with numerous outbreaks subsequently in every continent. [75] The first known transmission of A/H5N1 to a human occurred in Hong Kong in 1997, when there was an outbreak of 18 human cases resulting in 6 deaths. It was determined that all the infected ...
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 ]
Dairy industry experts say the virus entered California after local cows were shipped to another state and then returned to California.
And the country's H5N1 death toll recently surpassed that of Vietnam to make Indonesia the country that has lost the most lives to the virus. Indonesia has logged 56 confirmed human cases, 44 of which have been fatal. Globally 236 cases of H5N1 infection have been confirmed in 10 countries since late 2003 and 138 of those people have died." [106]
A new variant of the bird flu has infected a dairy worker in Nevada, marking the state's first human case of the H5N1 avian influenza.. The worker was exposed to the D1.1 strain after working with ...
There have been 939 cases of human H5N1 infections worldwide as of November 2024, according to the World Health Organization. ... Fortunately, the mutated virus did not appear to pass from those ...
While prior H5N1 strains have been known, they were significantly different from the current H5N1 strain on a genetic level, making the global spread of this new strain unprecedented. The current H5N1 strain is a fast-mutating, highly pathogenic avian influenza virus (HPAI) found in multiple bird species. It is both epizootic (an epidemic in ...