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[173] In the first half of the 17th century, a plague killed some 1.7 million people in Italy. [174] More than 1.25 million deaths resulted from the extreme incidence of plague in 17th-century Spain. [175] The Black Death ravaged much of the Islamic world. [176] Plague could be found in the Islamic world almost every year between 1500 and 1850.
Often simply referred to as "The Plague", the Black Death had both immediate and long-term effects on human population across the world as one of the most devastating pandemics in human history, including a series of biological, social, economic, political and religious upheavals that had profound effects on the course of world history ...
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.
Globally, there are about 1,000–3,000 cases per year, with the three most endemic countries being the Democratic Republic of Congo, Madagascar, and Peru, according to the World Health Organization.
Plague, one of the deadliest bacterial infections in human history, caused an estimated 50 million deaths in Europe during the Middle Ages when it was known as the Black Death.
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]
The most infamous flea-to-human transmitted disease is the bubonic plague, which was caused by the bacterium Yersinia pestis. The plague, fevers, tularemia: The diseases fleas can carry and how to ...
Bubonic plague is a variant of the deadly flea-borne disease plague, which is caused by the enterobacteria Yersinia pestis, that devastated human populations beginning in the 14th century. Bubonic plague is primarily spread by fleas that lived on the black rat , an animal that originated in South Asia and spread to Europe by the 6th century.