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A high-dose vaccine (Fluzone High-Dose) four times the strength of standard flu vaccine was approved by the FDA in 2009. [22] [23] [24] This vaccine is intended for people 65 and over, who typically have weakened immune response due to normal aging. The vaccine produces a greater immune response than standard vaccine.
Influenza vaccines, colloquially known as flu shots [28] or the flu jab, [29] are vaccines that protect against infection by influenza viruses. [ 30 ] [ 31 ] New versions of the vaccines are developed twice a year, as the influenza virus rapidly changes. [ 30 ]
The following is a list of WHO recommended strains for the Northern Hemisphere influenza season. Starting in the 2012–2013 season, the recommendation shifted to include the composition of a quadrivalent influenza vaccine (QIV) that contains both influenza B lineages, alongside a trivalent influenza vaccine (TIV) containing one influenza B lineage.
That is exactly what happened with the 2009 H1N1 swine flu and the Spanish flu of 1918 ... to create new vaccines each season. ... to gauge how well this year’s vaccine and flu strains match ...
Difference between the flu mortality age-distributions of the 1918 pandemic and normal epidemics – deaths per 100,000 persons in each age group, United States, for the interpandemic years 1911–1917 (dashed line) and the pandemic year 1918 (solid line) [240] Three pandemic waves: weekly combined flu and pneumonia mortality, United Kingdom ...
Over the 2017-2018 flu season, the worst on record since the 2009 H1N1 pandemic, the CDC estimates that 48.8 million people became sick with influenza, while 79,400 died from the disease. Show ...
The flu is a common infection, affecting billions of people each year. The World Health Organization also estimates that the flu is responsible for 3-5 million cases of severe illness and 290,000 ...
In the worldwide 1918 flu pandemic, "physicians tried everything they knew, everything they had ever heard of, from the ancient art of bleeding patients, to administering oxygen, to developing new vaccines and sera (chiefly against what we now call Hemophilus influenzae – a name derived from the fact that it was originally considered the ...