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The first plague vaccine was developed by bacteriologist Waldemar Haffkine in 1897. [3] [4] He tested the vaccine on himself to prove that the vaccine was safe.[4] [5] Later, Haffkine conducted a massive inoculation program in British India, and it is estimated that 26 million doses of Haffkine's anti-plague vaccine were sent out from Bombay between 1897 and 1925, reducing the plague mortality ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 17 December 2024. Disease caused by Yersinia pestis bacterium This article is about the disease caused by Yersinia pestis. For other uses, see Plague. Medical condition Plague Yersinia pestis seen at 200× magnification with a fluorescent label. Specialty Infectious disease Symptoms Fever, weakness ...
The Black Death was a bubonic plague pandemic that occurred in Europe from 1346 to 1353. It was one of the most fatal pandemics in human history; as many as 50 million people [2] perished, perhaps 50% of Europe's 14th century population. [3] The disease is caused by the bacterium Yersinia pestis and spread by fleas and through the air.
Mortality from bubonic plague today is between 1% and 10%, whereas septicemic plague may have mortality as high as 50% — and if untreated, it's over 90%. Fleas can spread other diseases too
The disease that historically came to be known as the “Black Death” has ... Over 80% of plague cases in the U.S. have been the bubonic form, according to the CDC, though the pneumonic form is ...
Bubonic plague 15–100 million 25–60% of European population [5] 541–549 North Africa, Europe, and Western Asia 3 HIV/AIDS pandemic: HIV/AIDS: 44 million (as of 2025) [a] 1981–present [6] Worldwide 1 Black Death: Bubonic plague: 25–50 million 30–60% of European population [7] 1346–1353 Europe, Asia, and North Africa 5 COVID-19 pandemic
The plague is considered the likely cause of the Black Death that swept through Asia, Europe, and Africa in the 14th century and killed an estimated 50 million people, [1] [10] including about 25% to 60% of the European population. [1] [11] Because the plague killed so many of the working population, wages rose due to the demand for labor. [11]
The last human plague case in New Mexico involved a Torrance County resident in 2021, the agency said. Four people in the state had bubonic plague in 2020 and one died. Here’s what to know.