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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.
Plague is an infectious disease caused by the bacterium Yersinia pestis. [2] Symptoms include fever, weakness and headache. [1] Usually this begins one to seven days after exposure. [2] There are three forms of plague, each affecting a different part of the body and causing associated symptoms.
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.
Where does plague occur in the U.S.? On average, the U.S. sees around seven cases of human plague each year, mostly in the rural West. Cases are typically concentrated in northern New Mexico ...
Bubonic plague is one of three types of plague caused by the bacterium Yersinia pestis. [1] One to seven days after exposure to the bacteria, flu-like symptoms develop. [ 1 ] These symptoms include fever , headaches , and vomiting , [ 1 ] as well as swollen and painful lymph nodes occurring in the area closest to where the bacteria entered the ...
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 ...
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 ...
The People's Republic of China has eradicated pneumonic plague from most parts of the country, but still reports occasional cases in remote western areas, where the disease is carried by rats and the marmots that live across the Himalayan plateau. Outbreaks can be caused when a person eats an infected marmot or comes into contact with fleas ...