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For a given epidemic or pandemic, the average of its estimated death toll range is used for ranking. If the death toll averages of two or more epidemics or pandemics are equal, then the smaller the range, the higher the rank. For the historical records of major changes in the world population, see world population. [3]
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.
This list of wars by death toll includes all deaths directly or indirectly caused by the deadliest wars in history. These numbers encompass the deaths of military personnel resulting directly from battles or other wartime actions, as well as wartime or war-related civilian deaths, often caused by war-induced epidemics, famines, or genocides.
In the U.S., from a population of 105 million, the flu claimed about 675,000 lives—almost 10 times more than the country's World War I fatalities—and it dramatically lowered life expectancy by ...
In the 21st century, fewer than 200 people die of the plague worldwide each year, mainly due to lack of treatment. [67] Plague is considered to be endemic in 26 countries around the world, with most cases found in remote areas of Africa. [68] The three most endemic countries are Madagascar, the Democratic Republic of the Congo and Peru. [69]
Crude mortality rate refers to the number of deaths over a given period divided by the person-years lived by the population over that period. It is usually expressed in units of deaths per 1,000 individuals per year. The list is based on CIA World Factbook 2023 estimates, unless indicated otherwise.
In such places, cholera infects between one and four million people every year, per the World Health Organization, and contributes to some 21,000 to 143,000 deaths annually.
The oldest known plague victims date back to around 5,000 years ago in Europe. Ancient DNA reveals the role the disease may have played in a mysterious population decline.