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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.
Alexandre Émile Jean Yersin (22 September 1863 – 1 March 1943) was a Swiss-French physician and bacteriologist.He is remembered as the co-discoverer (1894) of the bacillus responsible for the bubonic plague or pest, which was later named in his honour: Yersinia pestis.
On June 14, Kitasato discovered that the bacillus, now known as Yersinia pestis, was the direct cause of the plague. However, he was doubtful of its significance as the autopsy was done 11 hours after death. [37] His finding was reported by Lowson, who had supported Kitasato's work, to The Lancet. His report was published a week later on August 25.
The disease is caused by the bacterium Yersinia pestis and spread by fleas and through the air. [4] [5] One of the most significant events in European history, the Black Death had far-reaching population, economic, and cultural impacts. It was the beginning of the second plague pandemic. [6]
The grasshopper species Yersinella Raimondi was so named in his honour in 1860. Yersin had three children with his wife, Fanny Moschell. He died three weeks before the birth of Alexandre Emile Jean Yersin, who became famous for discovering the causative agent of the plague, the bacterium Yersinia pestis. The renowned son developed his interest ...
Caused by the bacterium Yersinia pestis, which is often transmitted by fleas and passed through small animals like rodents or cats, the plague has been responsible for more than 200 million deaths ...
Yersinia pestis has been discovered in archaeological finds from the Late Bronze Age (~3800 BP). [42] The bacteria is identified by ancient DNA in human teeth from Asia and Europe dating from 2,800 to 5,000 years ago. [43] Some authors have suggested that the plague was responsible for the Neolithic decline. [44]
Sahachiro Hata researched bubonic plague with Japanese bacteriologist and physician, Kitasato ShibasaburÅ, who co-discovered the infectious agent, a bacterium called Yersinia pestis. [2] Hata worked as an assistant for Kitasato and conducted research into the prevention of plague and other epidemic diseases.