Bio 490 - Plague Presentation
... 1. Bites from infected fleas 2. The bacterium can enter through breaks in the skin. ...
... 1. Bites from infected fleas 2. The bacterium can enter through breaks in the skin. ...
Pneumonic Plague
... What is it? Plague is an infectious disease caused by the bacterium Yersinia pestis. This bacterium is found in rodents and their fleas and occurs in many areas of the world, including the United States. Y. pestis is easily destroyed by sunlight and drying. Even so, when released into air, the bacte ...
... What is it? Plague is an infectious disease caused by the bacterium Yersinia pestis. This bacterium is found in rodents and their fleas and occurs in many areas of the world, including the United States. Y. pestis is easily destroyed by sunlight and drying. Even so, when released into air, the bacte ...
The Black Death - AP European History at University High School
... facilitated long-distance trade (Silk Road) • “Great Famine” from 1315-1322 – Greater susceptibility to disease ...
... facilitated long-distance trade (Silk Road) • “Great Famine” from 1315-1322 – Greater susceptibility to disease ...
The Plague
... Y. pestis has a swath of virulence factors that give it such impact on the host as observed in the epidemics above, with incredibly high mortality rates from sepsis. Once the pathogen is able to bypass the skin barrier though the flea bite, and it is able to infect macrophages. Although some are ki ...
... Y. pestis has a swath of virulence factors that give it such impact on the host as observed in the epidemics above, with incredibly high mortality rates from sepsis. Once the pathogen is able to bypass the skin barrier though the flea bite, and it is able to infect macrophages. Although some are ki ...
A Threshold Logistic Regression Model for Analyzing Epidemiological Time Series
... with their fleas, and testing both rodents and fleas for plague using a bacteriological test and a serological test. Plague is still prevalent in several Asian, African, and American countries including the USA, and is today one of the re-emerging diseases. The major difficulty and/or novelty of thi ...
... with their fleas, and testing both rodents and fleas for plague using a bacteriological test and a serological test. Plague is still prevalent in several Asian, African, and American countries including the USA, and is today one of the re-emerging diseases. The major difficulty and/or novelty of thi ...
Yersinia pestis
... Gram-negative, facultatively anaerobic, bipolar staining, bacillus to coccobacillus, nonmotile, nonsporeforming, facultatively intracellular bacterium Order: Enterobacteriales; Family: Enterobacteriaceae Size: 0.5-0.8 ¥ 1.0-2.0 mm Nucleic acid: The genome of Yersinia pestis is 46004700 kb of DNA. Op ...
... Gram-negative, facultatively anaerobic, bipolar staining, bacillus to coccobacillus, nonmotile, nonsporeforming, facultatively intracellular bacterium Order: Enterobacteriales; Family: Enterobacteriaceae Size: 0.5-0.8 ¥ 1.0-2.0 mm Nucleic acid: The genome of Yersinia pestis is 46004700 kb of DNA. Op ...
The Black Death
... ‘Those who fell ill lasted little more than two or three days, but died suddenly, as if ...
... ‘Those who fell ill lasted little more than two or three days, but died suddenly, as if ...
Plague
... thus avoiding macrophage activation. Y.pestis has also inactivated its O-antigen genes, allowing the plasminogen activator (PLA) protease to be fully functional at the bacterial surface. PLA degrades host plasminogen, promoting the dissemination of bacteria from the site of infection to tissues and ...
... thus avoiding macrophage activation. Y.pestis has also inactivated its O-antigen genes, allowing the plasminogen activator (PLA) protease to be fully functional at the bacterial surface. PLA degrades host plasminogen, promoting the dissemination of bacteria from the site of infection to tissues and ...
Yersinia pestis - life.illinois.edu
... Yersinia pestis Yersinia pestis is a bacterium that causes plague (Black Death). Plague is endemic in rodents such as black rats and prairie dogs. Plague is vectored by the Oriental rat flea, Xenopsylla cheopis. The flea normally feeds on rats, but will bite humans who live in close contact when pop ...
... Yersinia pestis Yersinia pestis is a bacterium that causes plague (Black Death). Plague is endemic in rodents such as black rats and prairie dogs. Plague is vectored by the Oriental rat flea, Xenopsylla cheopis. The flea normally feeds on rats, but will bite humans who live in close contact when pop ...
Yersinia Pestis
... benign recent ancestor of the bacterium that causes bubonic plague played a key role in the evolution of the deadly disease from a germ that causes a mild human stomach illness acquired via contaminated food or water to the flea-borne agent of the "Black Death.” ...
... benign recent ancestor of the bacterium that causes bubonic plague played a key role in the evolution of the deadly disease from a germ that causes a mild human stomach illness acquired via contaminated food or water to the flea-borne agent of the "Black Death.” ...
Yersinia pestis
Yersinia pestis (formerly Pasteurella pestis) is a Gram-negative, rod-shaped coccobacillus, a facultative anaerobic bacterium that can infect humans and animals. It causes the deadly disease named plague.Human Y. pestis infection takes three main forms: pneumonic, septicemic, and bubonic plagues. All three forms were responsible for a number of high-mortality epidemics throughout human history, including: the sixth century's Plague of Justinian; the Black Death, which accounted for the death of at least one-third of the European population between 1347 and 1353; and the 19th century's Third Pandemic. These plagues probably originated in China and were transmitted west via trade routes.Y. pestis was discovered in 1894 by Alexandre Yersin, a Swiss/French physician and bacteriologist from the Pasteur Institute, during an epidemic of plague in Hong Kong. Yersin was a member of the Pasteur school of thought. Kitasato Shibasaburō, a German-trained Japanese bacteriologist who practiced Koch's methodology, was also engaged at the time in finding the causative agent of plague. However, Yersin actually linked plague with Y. pestis. Originally named Pasteurella pestis, the organism was renamed in 1967.Every year, thousands of cases of plague are still reported to the World Health Organization, although, with proper treatment, the prognosis for victims is now much better. A five- to six-fold increase in cases occurred in Asia during the time of the Vietnam war, possibly due to the disruption of ecosystems and closer proximity between people and animals. Plague also has a detrimental effect on nonhuman mammals. In the United States, animals such as the black-tailed prairie dog and the endangered black-footed ferret are under threat from the disease.