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A 2009 study in Influenza and Other Respiratory Viruses based on data from fourteen European countries estimated a total of 2.64 million excess deaths in Europe attributable to the Spanish flu during the major 1918–1919 phase of the pandemic, in line with the three prior studies from 1991, 2002, and 2006 that calculated a European death toll ...
Many theories about the origins and progress of the Spanish flu persisted in the literature, but it was not until 2005, when various samples of lung tissue were recovered from American World War I soldiers and from an Inupiat woman buried in permafrost in a mass grave in Brevig Mission, Alaska, that significant genetic research was made possible.
According to the CDC, [1] "a study published in the New England Journal of Medicine [25] [in August, 2014] indicated that the high-dose vaccine was 24.2% more effective in preventing flu in adults 65 years of age and older relative to a standard-dose vaccine." The CDC recommends the high-dose vaccine for people 65 and over but expresses no ...
The 1918–1920 flu pandemic is commonly referred to as the Spanish flu, and caused millions of deaths worldwide. To maintain morale, wartime censors minimized early reports of illness and mortality in Germany , the United Kingdom , France , and the United States .
It contains a flu strain called A/Astrakhan/3212/2020 (H5N8)-like strain (CBER-RG8A) (clade 2.3.4.4b). [1] Zoonotic influenza vaccine Seqirus was considered to be the best candidate to provide protection against circulating H5 influenza A strains.
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.
Influenza pandemic or flu season Transmissibility Clinical Severity Spanish flu pandemic: 5: 7 1957–1958 influenza pandemic: 4: 4 1968 influenza pandemic: 4: 3 1977-1978 influenza epidemic: 2: 2 2006-2007 flu season: 1: 1 2007-2008 flu season: 2: 3 2009 swine flu pandemic: 3: 2
H5N1 influenza virus is a type of influenza A virus which mostly infects birds. H5N1 flu is a concern because its global spread may constitute a pandemic threat. The yardstick for human mortality from H5N1 is the case-fatality rate (CFR); the ratio of the number of confirmed human deaths resulting from infection of H5N1 to the number of those confirmed cases of infection with the virus.