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A human H5N1 pandemic might emerge with initial lethality resembling that over-50% case fatality now observed in pre-pandemic H5N1 human cases, rather than with the still-high 1-2% seen with the Spanish flu or with the lower rates seen in the two more recent influenza pandemics. [48] As a WHO working group noted,
Estimated Influenza Disease Burden – United States [1] Season Hospitalizations Deaths Estimate 95% UI Estimate 95% UI 2010-2011: 290,000 (270,000 – 350,000) 37,000
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.
Flu vaccines are effective at reducing risk of serious illness or death from the virus, though officials worry drops in vaccines are contributing to a rise in childhood deaths from flu in the 2023 ...
Vaccination rates among children for flu have been declining in recent years. About 53.9% of children were vaccinated against influenza this season, about 2.2% points lower than last season and 8. ...
The second wave came with the influx of influenza A viruses, such as H1N1. [3] According to preliminary burden estimates for the 2019–2020 flu season (October 1, 2019 through April 4, 2020) there were between 39 and 56 million flu cases; 18–26 million doctor visits; 410,000 to 740,000 hospitalizations, and between 24,000 and 62,000 deaths.
The high mortality rate of the influenza pandemic is one aspect that sets the pandemic apart from other disease outbreaks. Another factor is the higher mortality rate of men compared with women. Men with an underlying condition were at significantly more risk. Tuberculosis was one of the deadliest diseases in the 1900s, and killed more men than ...
Nationally, mortality attributed to P&I exceeded 10.0% for four consecutive weeks, peaking at 10.8% during the week ending January 20, 2018. [12] A preliminary estimate (September 2018) attributed more than 80,000 US deaths to influenza this season, [13] [14] but this was later revised down to 52,000 in light of more complete information. [15]
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