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According to the National Institutes of Health (NIH), the seasonal influenza virus (or the flu) hospitalizes approximately 200,000 people and kills over 36,000 people annually in the U.S. alone.
Japanese women in Tokyo during the Spanish flu pandemic, 1919. Estimates for the death toll in China have varied widely, [292] [98] a range which reflects the lack of centralized collection of health data at the time due to the Warlord period. China may have experienced a relatively mild flu season in 1918 compared to other areas of the world.
Reasonably effective ways to reduce the transmission of influenza include good personal health and hygiene habits such as: not touching your eyes, nose or mouth; [6] frequent hand washing (with soap and water, or with alcohol-based hand rubs); [6] eating a diet rich in fruits and vegetables; [16] covering coughs and sneezes; avoiding close contact with sick people; and staying home yourself if ...
The cost of a flu season in lives lost, medical expenses and economic impact can be severe. In 2017, the World Health Organization (WHO) estimated that the seasonal flu causes 290,000 to 650,000 annual deaths worldwide. [31] In 2003, the WHO estimated that the cost of flu epidemics in the United States was US$71–167 billion per year. [32]
During the 2021-2022 flu season, the flu vaccine was about 36% effective, the CDC estimates. Year to year, numbers can vary widely because officials have to guess which kinds of flu viruses will ...
Now, flu cases have rebounded, with an estimated 26 to 50 million flu cases, 290,000 to 670,000 hospitalizations, and 17,000 to 98,000 deaths from flu last year, per the CDC. (The data is still ...
Influenza A viruses are further classified, based on the viral surface proteins hemagglutinin (HA or H) and neuraminidase (NA or N). 18 HA subtypes (or serotypes) and 11 NA subtypes of influenza A virus have been isolated in nature. Among these, the HA subtype 1-16 and NA subtype 1-9 are found in wild waterfowl and shorebirds and the HA ...
Influenza A virus subtype H7N7 (A/H7N7) is a subtype of Influenza A virus, a genus of Orthomyxovirus, the viruses responsible for influenza.Highly pathogenic strains (HPAI) and low pathogenic strains (LPAI) exist.