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Despite the high morbidity and mortality rates that resulted from the epidemic, the Spanish flu began to fade from public awareness over the decades until the arrival of news about bird flu and other pandemics in the 1990s and 2000s. [320] [321] This has led some historians to label the Spanish flu a "forgotten pandemic". [177]
Although the overall fatality rate for the Spanish flu is estimated to have been 10% to 20% of the population, [citation needed] the lethal waves of the Spanish flu are not reported to have emerged with anything like the over-50% case fatality ratio observed to date in human H5N1 infection. Studies indicating that an H5N1 pandemic may be more ...
Human infectious diseases may be characterized by their case fatality rate (CFR), the proportion of people diagnosed with a disease who die from it (cf. mortality rate).It should not be confused with the infection fatality rate (IFR), the estimated proportion of people infected by a disease-causing agent, including asymptomatic and undiagnosed infections, who die from the disease.
The CDC estimates that there have been at least 9.1 million illnesses, with 110,000 hospitalizations for adults. It’s also estimated that 4,700 people have died from flu this season.
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
The season’s death toll of 199 matches the 2019-20 flu season, CDC said. The highest death toll recorded was 288 children who died from the flu in the 2009-10 season, at the height of the H1N1 ...
Case fatality rate Pandemic severity; Spanish flu [4] ... Typical seasonal flu [t 1] Every year 7.75 billion ... people infected numbers (500 million), mortality rate ...
For monitoring influenza A virus in wastewater, CDC compares the most recent weeks of influenza A virus levels recorded at a wastewater site to levels reported between Oct. 1, 2023 and March 2 ...