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2009 swine flu pandemic: 2009–2010 Worldwide Influenza A virus subtype H1N1: Lab confirmed deaths: 18,449 (reported to the WHO) [264] Estimated death toll: 284,000 (possible range 151,700–575,400) [265] 2010s Haiti cholera outbreak: 2010–2019 Haiti: Cholera (strain serogroup O1, serotype Ogawa) 10,075 [266]
As of 14 July, the number of officially recognised cases skyrocketed, with 137 deaths, [359] making the death toll in Argentina the second highest in the world at the time, behind only the US. As of April, Brazilian airports were monitoring arrivals from affected areas, under the direction of the National Sanitary Surveillance Agency (ANVISA).
As H5N1 continued killing many birds and a few people throughout the spring in countries where it is now endemic, in June Malaysia and Germany saw a resurgence of bird deaths due to H5N1, while the Czech Republic and Togo experienced their first major outbreak of H5N1 avian influenza.
The 2009 swine flu pandemic, caused by the H1N1/swine flu/influenza virus and declared by the World Health Organization (WHO) from June 2009 to August 2010, was the third recent flu pandemic involving the H1N1 virus (the first being the 1918–1920 Spanish flu pandemic and the second being the 1977 Russian flu).
The 1889–1890 pandemic, often referred to as the Asiatic flu [57] or Russian flu, killed about 1 million people [58] [59] out of a world population of about 1.5 billion. It was long believed to be caused by an influenza A subtype (most often H2N2), but recent analysis largely brought on by the 2002-2004 SARS outbreak and the COVID-19 pandemic ...
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.
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]
The most recent flu pandemic was the 2009 swine flu pandemic, which originated in Mexico and resulted in hundreds of thousands of deaths. [34] It was caused by a novel H1N1 strain that was a reassortment of human, swine, and avian influenza viruses.