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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.
Overall, air pollution causes the deaths of around ca. 7 million people worldwide each year, and is the world's largest single environmental health risk, according to the WHO (2012) and the IEA (2016). [33] [34] [35]
The Spanish Flu, the second deadliest pandemic in history after the bubonic plague, along with the aftermath of World War I and ensuing political and social chaos, made 1918 a tough time to be alive.
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.
The Black Death ravaged much of the Islamic world. [55] Plague was present in at least one location in the Islamic world virtually every year between 1500 and 1850. [56] Plague repeatedly struck the cities of North Africa. Algiers lost 30,000–50,000 to it in 1620–1621, and again in 1654–1657, 1665, 1691, and 1740–1742. [57]
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.
The bubonic plague is a devastating disease that kills your body from the inside out. 75 million people, including over half of Europe's population, were affected by the disease in the 14th century.