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H5N1 flu is a concern due to the fact that 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. For example, if there ...
For example, the FAO (2002) figure for Denmark, which has one of the highest meat export rates compared to its population, was 145.9 kg (322 lb) (highest in the world). More recent FAO figures (2009) have taken the earlier discrepancy into account, resulting in a significantly lower 95.2 kg (210 lb) for Denmark (13th in the world).
Between 2003 and November 2024, the World Health Organization has recorded 948 cases of confirmed H5N1 influenza, leading to 464 deaths. [6] The true fatality rate may be lower because some cases with mild symptoms may not have been identified as H5N1. [7]
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.
US influenza statistics by flu season. From the Centers for Disease Control and Prevention page called "Disease Burden of Flu": "Each year CDC estimates the burden of influenza in the U.S. CDC uses modeling to estimate the number of flu illnesses, medical visits, hospitalizations, and deaths related to flu that occurred in a given season.
1957–1958 influenza pandemic ('Asian flu') 1957–1958 Worldwide Influenza A virus subtype H2N2: 1–4 million [187] [203] [204] 1960–1962 Ethiopia yellow fever epidemic 1960–1962 Ethiopia: Yellow fever: 30,000 [205] Seventh cholera pandemic: 1961–present Worldwide Cholera (El Tor strain) 36,000 [citation needed] [206] Hong Kong flu ...
The November 27, 2009 worldwide update by the U.N.'s World Health Organization (WHO) states that "more than 207 countries and overseas territories or communities have reported laboratory confirmed cases of pandemic influenza H1N1 2009, including over 7,820 deaths". The WHO has also tracked more than 622,482 laboratory-confirmed cases of H1N1. [58]
The World Health Organization (WHO), believing that the world was closer to another influenza pandemic than it has been any time since 1968, when the last of the 20th century's three pandemics swept the globe, has developed guidelines on pandemic influenza preparedness and response. The March 2005 plan includes guidance on roles and ...