Yersinia pestis

Yersinia pestis life history Yersinia pestis is a causative agent of systemic invasive infection, often called plague. Yersinia pestis is a very lethal pathogen and may cause serious illness or death during infection unless antibiotics are administered. In the past, the plague caused a devastating epidemic in three modern history; the Chadianston plague spread to the Mediterranean from the Middle East in the 6th and 8th centuries killing about 25% of the population under the Alps. .

Plague is caused by plague infected by fleas. Fleas spread predominantly through rodent related fleas in rodents and other mammalian hosts. Normally, vampire flea acquires Yersinia pestis from infected rodents. Bacteria grow and accumulate, possibly blocking the digestive tract in the intestines of fleas. When an infected fleas leap into another mammal, preferably a rodent, it causes the bacteria to be transmitted to the new host by backflowing the condensed blood from the gastrointestinal obstruction 4. When an infected flea tries to eat humans it infects humans with plague and causes human plague in the form of plague or lung plague. Traditionally, human fleas rarely accumulate Yersinia pestis.

Plague is an acute infection caused by Yersinia pestis and is still prevalent in indigenous rodent populations in South America, North America, Africa, and Central Asia. In epidemic diseases, plague spreads to humans through ingestion of the Orient or India and human flea bites. The flea's main host is black urban mouse and brown sewer mice. Pest is also transmitted in the form of pneumonia. Yersinia pestis is a highly pathogenic organism for humans and animals, and in the past, the death rate of antibiotics was very high. This epidemic is also important militarily and is listed as a Class A bioterrorist by the Centers for Disease Control and Prevention.

Oriental cockroaches (Xenopsylla cheopis) infected with Yersinia pestis are shown as dark matter in the intestines. The foregut of the flea is blocked by the Bacillus bacillus biofilm; when trying to eat a flea infected host, the plague returns to the wound and causes infection. In the Middle Ages, medical knowledge was stagnant. The most prestigious statement at the time was from the medical department of Paris, and according to the report of King French, he accused heaven. This report has become the first and most widely prevalent series of plague aimed at advising patients. Plague is caused by harsh air and is the most widely accepted theory. Today, this is called gas theory.