Y. pestis: Yersinia pestis, the bacteria that causes the bubonic plague which in the year 541 (as the Black Death) and later in the Middle Ages decimated Europe. The effects of the plague are described in the nursery rhyme "We all fall down."
Y. pestis mainly infects rats and other rodents which are the prime reservoir for the bacteria. Fleas are the prime vectors carrying the bacteria from one species to another. They bite rodents infected with Y. pestis, then they bite people and so transmit the disease to them.
Transmission of the plague to people can also occur from eating infected animals such as squirrels. Once someone has the plague, they can transmit it to another person via aerosol droplets.
Plague occurs in the U.S. It is treatable with antibiotics but, if not treated promptly, can promptly lead to death.
Yersinia is named after the Swiss bacteriologist Alexandre- Emile-Jean Yersin (1863-1943) who identified it in 1894 after a trip to Hong Kong looking for the agent that was killing thousands of people in southern China. The bacteria was also discovered at the same time by the Japanese bacteriologist Shibasaburo Kitasako.
Yersinia pestis View the organism: Yersinia pestis under the microscope (courtesy D. Kunkel) Collection sites, home-pages Fact sheets, consumer guides, general information
Though there are 11 named species in the genus Yersinia, only 3 are considered important human pathogens: Y. pestis, the etiologic agent of ...
Y. pestis: Yersinia pestis, the bacteria that causes the bubonic plague which in the year 541 (as the Black Death) and later in the Middle Ages decimated Europe.
DNA of Y. pestis was recovered from remains of persons in one mass grave established to be of the Justinian pandemic era on the basis of ...
Pathogenic Y. pestis produce two antiphagocytic components; F1 antigen and the VW antigens. Both are required for virulence and, interestingly, are only produced when the ...