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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.
There are four different types of influenza virus: A, B, C, and D. Influenza C usually causes only mild illness while D mostly affects animals, especially cattle. The influenza A and B versions ...
It's flu season right now, and the U.S. is in the midst of a wave that's straining hospitals.But not all influenza is the same. There are some notable differences between flu A and flu B strains.
Influenza B viruses contribute to seasonal epidemics alongside influenza A viruses but have never been associated with a pandemic. [23] Influenza C virus, like influenza B virus, is primarily found in humans, though it has been detected in pigs, feral dogs, dromedary camels, cattle, and dogs.
Influenza B virus is the only species in the genus Betainfluenzavirus in the virus family Orthomyxoviridae. Influenza B virus is a negative-sense single-strand RNA virus known only to infect certain mammal species, including humans, ferrets, pigs, and seals.
High dietary intake of green tea (specifically, catechins and theanine that is found in tea products) has been correlated with reduced risk of contracting influenza, as well as having an antiviral effect upon types A and B. [58] [59] [60] Specifically, the high levels of epigallocatechin gallate, epicatechin gallate, and epigallocatechin ...
Right now, the predominant strains circulating in the U.S. are flu A H1N1, flu A H3N2, and one influenza B strain. Over 95% of flu cases right now are influenza A, per the CDC.
Flu season is an annually recurring time period characterized by the prevalence of an outbreak of influenza, caused either by Influenza A or by Influenza B. The season occurs during the cold half of the year in temperate regions; November through February in the northern hemisphere and May to October in the southern hemisphere.