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Influenza A virus and influenza B virus co-circulate, so have the same patterns of transmission. [1] The seasonality of influenza C virus, however, is poorly understood. Influenza C virus infection is most common in children under the age of two, and by adulthood most people have been exposed to it.
If it seems like you and everyone around you is getting sick this winter, you're not wrong. Experts say this is the worst flu season in the U.S. in more than a decade and cases are still trending ...
Flu A and flu B are the most common strains of the flu that circulate in humans. The U.S. is currently in the middle of flu season, with a high number of cases reported across the country.
A/Rio de Janeiro/62434/2021 (H3N2). [28] The starting A indicates that the virus is an influenza A virus. Rio de Janeiro indicates the place of collection. 62434 is a laboratory sequence number. 2021 (or just 21) indicates that the sample was collected in 2021. No species is mentioned so by default, the sample was collected from a human.
In Spain it was also known as the 'French flu' (gripe francesa), [51] [9] or the 'Naples Soldier' (Soldado de Nápoles), after a popular song from a zarzuela. [b] [58] Spanish flu (gripe española) is now a common name in Spain, [63] but remains controversial there. [64] [65] Othering derived from geopolitical borders and social boundaries.
A nationwide surge in flu, COVID-19, RSV and norovirus infections is fueling concerns of a possible virus "quademic." Or is it just winter? The three respiratory viruses plus norovirus, a ...
The G4 virus, also known as the "G4 swine flu virus" (G4) and "G4 EA H1N1", is a swine influenza virus strain discovered in China. [68] The virus is a variant genotype 4 (G4) Eurasian avian-like (EA) H1N1 virus that mainly affects pigs, but there is some evidence of it infecting people. [ 68 ]
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.