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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 are 100 confirmed cases of a disease and 50 die as a consequence, then the CFR is 50%.
From 1962 to 2022 there have been 157 recorded cases of the infection in United States, only 4 of those 157 individuals survived the disease. A combination of drugs have shown effectiveness in survivors. The rate drops significantly to >50% with treatment. The rate dropped significantly to 10% with effective treatments. Eradicated .
The 1977 Russian flu was a relatively benign flu pandemic, mostly affecting population younger than the age of 26 or 25. It is estimated that 700,000 people died due to the pandemic worldwide. The cause was H1N1 virus strain, which was not seen after 1957 until its re-appearance in China and the Soviet Union in 1977.
This first table gives a convenient overview of the general categories and broad causes. The leading cause is cardiovascular disease at 31.59% of all deaths. Rate of death by cause. Percent of all deaths. Category. Cause. Percent. Percent. I. Communicable, maternal, neonatal, and nutritional disorders.
The Iroquois League of Nations or "People of the Long House" was a politically advanced, democratic society, which is thought by some historians to have influenced the United States Constitution, [25] [26] with the Senate passing a resolution to this effect in 1988. [27]
People under 15 years of age made up over a quarter of the world population (25.18%), and people age 65 and over made up nearly ten percent (9.69%) in 2021. [7] The world population more than tripled during the 20th century from about 1.65 billion in 1900 to 5.97 billion in 1999.
Poliomyelitis (/ ˌ p oʊ l i oʊ ˌ m aɪ ə ˈ l aɪ t ɪ s / POH-lee-oh-MY-ə-LY-tiss), commonly shortened to polio, is an infectious disease caused by the poliovirus. Approximately 75% of cases are asymptomatic; mild symptoms which can occur include sore throat and fever; in a proportion of cases more severe symptoms develop such as headache, neck stiffness, and paresthesia.
[109] [110] The World Health Organization issued a global alert soon after. [111] The WHO update on 28 September 2012 said the virus did not seem to pass easily from person to person. [112] However, on 12 May 2013, a case of human-to-human transmission in France was confirmed by the French Ministry of Social Affairs and Health. [113]