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  2. Theories of the Black Death - Wikipedia

    en.wikipedia.org/wiki/Theories_of_the_Black_Death

    Yersinia pestis seen at 2000× magnification. This bacterium, carried and spread by the flea, is generally thought to have been the cause of millions of deaths. [2]Several possible causes have been advanced for the Black Death; the most prevalent is the bubonic plague theory. [3]

  3. Yersinia - Wikipedia

    en.wikipedia.org/wiki/Yersinia

    Yersinia is a genus of bacteria in the family Yersiniaceae. [1] Yersinia species are Gram-negative, coccobacilli bacteria, a few micrometers long and fractions of a micrometer in diameter, and are facultative anaerobes. [2] Some members of Yersinia are pathogenic in humans; in particular, Y. pestis is the causative agent of the plague.

  4. Yersinia pestis - Wikipedia

    en.wikipedia.org/wiki/Yersinia_pestis

    Yersinia pestis is a parasite of its host, the rat flea, which is also a parasite of rats, hence Y. pestis is a hyperparasite. Y. pestis was discovered in 1894 by Alexandre Yersin , a Swiss/French physician and bacteriologist from the Pasteur Institute , during an epidemic of the plague in Hong Kong .

  5. The 9 Worst Years in History to be Alive - AOL

    www.aol.com/9-worst-years-history-alive...

    Caused by the bacterium Yersinia pestis and primarily spread by fleas on rats, the plague also swept through Asia and North Africa. It resulted in the deaths of an estimated 25 million to 30 ...

  6. Bubonic plague - Wikipedia

    en.wikipedia.org/wiki/Bubonic_plague

    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 skin. [2]

  7. Yersiniosis - Wikipedia

    en.wikipedia.org/wiki/Yersiniosis

    Yersiniosis is an infectious disease of the gastrointestinal tract caused by bacteria of the genus Yersinia other than Y. pestis. Most cases of yersiniosis in humans are caused by Y. enterocolitica, with a small minority being caused by Y. pseudotuberculosis. Rarely, other species of the genus can cause yersiniosis. [1]

  8. Plague (disease) - Wikipedia

    en.wikipedia.org/wiki/Plague_(disease)

    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 ...

  9. Why is air quality bad today? Here's what you need to know - AOL

    www.aol.com/why-air-quality-bad-today-124844029.html

    This article originally appeared on Bucks County Courier Times: Why is air quality bad today? What to know about what you breathe. Show comments. Advertisement. Advertisement.