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Seasonal flu viruses are dominated by influenza A and B. Most seasonal flu viruses are influenza type A, which usually start earlier in the season, with type B viruses circulating later in the winter.
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.
Flu season is an annually recurring time period characterized by the prevalence of an outbreak of influenza (flu). The season occurs during the cold half of the year in each hemisphere. It takes approximately two days to show symptoms. Influenza activity can sometimes be predicted and even tracked geographically.
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During the 2023-2024 season, there were 200 pediatric deaths related to flu — breaking the previous record high of 199 deaths during the 2019-2020 season. What you can do about it
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 ...
Spanish flu or Spanish influenza, also known as purulent bronchitis, may refer to: . the 1918 flu pandemic where 500 million people worldwide were infected with H1N1 influenza A virus between 1918 and 1920, killing from 20 to 100 million people
Spanish flu research concerns studies regarding the causes and characteristics of the Spanish flu, a variety of influenza that in 1918 was responsible for the worst ...