Yersinia pestis

It is received by getting bit by a rodent or flea or when Yersinia pestis enters the bloodstream. The most serious and deadliest form is the pneumonic plague, although it is rare. It occurs when Yersinia pestis spreads to the lungs and causes pneumonia. This form of the plague is so dangerous that if an infected person coughs, the bacteria from their lungs is discharged into the air…

begin with, diseases like those of the Bubonic Plague and SARS originated from virus/bacteria, and only surfaced when exposed. The Bubonic Plague is caused by a bacterium identified as Yersinia pestis, or Y pestis. It was first discovered in the province of Yunnan in China during 1334. “…the bacterium Yersinia pestis began its long march westward…” (Source 1, lines 9-10). SARS, on the other hand, was simply a part of the common cold family. Also recognized as severe acute respiratory syndrome,…

In order to understand how the black plague manage to spread as rapidly as it did as well as how it killed as many people as it did one must first understand its origin. Through the Mongol conquest of the Afro-Eurasia, the Mongols established a large network of communication through cultural exchange. The Mongols had a great deal of religious tolerance and do to this they had a variety of different cultures within their region of influence. However, these positive outcomes did not come without…

Why is The Plague SO Good at Killing? There are some factors about the Yersinia pestis that make it an infecting machine. Y. pestis creates two anti-phagocytic antigens, F1 antigen and VW antigen. An anti-phagocytic antigen is defined as, a substance in the immune system’s cells that eats harmful pathogens. Both the F1 and the VW antigen are necessary for the bacteria to grow, as is the temperature, 37degrees Celsius. It is because of this need for a certain temperature, lower than which fleas…

There are three types of common bubonic plague. Classic bubonic plague is transmitted through the bite of an infected flea or rodent. Flea bites are the most common mode of infection. There is a block in the flea’s gut which prevents it from fully digesting and metabolizing its food source. The flea is starving and full at the same time and as it sucks the blood from its victim it is also regurgitating contaminated blood back up and into the dermis of the victim. The bacteria is then drained…

epidemic or war up to that point. The Black Death is broadly thought to have been the result of infection by the bacterium Yersinia pestis. 5 Facts: • Many doctors believed that bad smells could force out the plague. Therefore, treatments for the disease included applying feces and urine, and other substances that were much more likely to spread disease than to cure it. • Y. Pestis utilized the flea by blocking its digestive tract. The flea tries constantly to feed, but the blockage causes it to…

area with white blood cells. Failure of homeostasis causes flu-like symptoms, fever, headaches, and chills, all of which are a typical immune response. Fever can be beneficial in that it inhibits some viruses and bacteria; although as we know, Y. pestis creates toxins that disable this immune response.…

Massive labor shortages due to high rates of mortality increased economic, social and technical modernizations and has been considered a reason for the emergence of the Renaissance in the late 14th century (Benedictow 2005). A bacterium called Yersinia pestis unleashed its fury from Asia to…

RESEARCH STRATEGY (a) Significance. Yersinia pestis (Yp) is a Gram-negative bacterial pathogen that is the causative agent of plague. Yp is a Category A agent defined by the National Institute of Allergy and Infectious Diseases (NIAID) as a pathogen that is high risk to public health and national security. A long term goal of NIAID is to explore the host-pathogen interaction and host response to infection with Yp, and to identify and characterize immune responses after exposure to Yp (1).…

The bubonic plague is one of the three plagues caused by a bacterium called Yersinia pestis. This plague was around in 1400–1500 Ce. People in that time called it the Black Death or the black plague. Ole j benedictow calculated that the bubonic plague killed 50 million people in Europe which is about 60% of Europe’s population and that is twice the population of Australia today. Where did the bubonic plague originated? The bubonic plague first emerged in China .this outbreak occurred in China…