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Influenza A virus subtype H2N2 (A/H2N2) is a subtype of Influenza A virus. H2N2 has mutated into various strains including the "Asian flu" strain (now extinct in the wild), H3N2, and various strains found in birds. It is also suspected of causing a human pandemic in 1889.
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The 1957–1958 Asian flu pandemic was a global pandemic of influenza A virus subtype H2N2 that originated in Guizhou in Southern China. [3] [4] [1] The number of excess deaths caused by the pandemic is estimated to be 1–4 million around the world (1957–1958 and probably beyond), making it one of the deadliest pandemics in history.
By the time of the 1889 pandemic, which may have been caused by an H2N2 strain, [78] the flu had become an easily recognizable disease. [75] The microbial agent responsible for influenza was incorrectly identified in 1892 by R. F. J. Pfeiffer as the bacteria species Haemophilus influenzae, which retains "influenza" in its name.
It is now known that this was caused by an immunologically novel H1N1 subtype of influenza A. [43] The next pandemic took place in 1957, the "Asian flu", which was caused by a H2N2 subtype of the virus in which the genome segments coding for HA and NA appeared to have derived from avian influenza strains by reassortment, while the remainder of ...
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6. Fish Sauce. A few drops of fish sauce can elevate your stir-fries, soups, and sauces with deep, savory, salty complexity.Just don't sniff the bottle. Ever. It smells like an old fish market ...
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