Black Death (Plague) Black Death
Black Death is the worst disaster to hit Europe before the wars of the twentieth century has this death came quickly advanced from Central Asia across the street trade of the East and the Near East and then through the ports of Italy in the Renaissance all the way to France and the heart of the European continent.
During the four years from 1351 to 1351 claimed the Black Death, 28 million people in the cities where sanitary means primitive increased mortality rate of up to 60 percent, and in London, which had a population of over 50 thousand people were dying at a rate 290 per person per day and this is what happened in the summer of 1349, and the bodies of the dead unburied in the streets because no one dares including priests from approaching them, and turned to panic and mass hysteria, chaos and the case led to the suppression of religious minorities and oppression.
Then suddenly, also arrived by this terrible disease known as black death disappeared and gone, leaving a shortage in the population of Europe and a change in the face of social and economic for a long time.
Before the middle of the sixth century BC it was smallpox and grit more deadly epidemics in history and the gravel at the time of extremely deadly won in Rome in one day 5000 people
Then, in year 541 Zgy and B a third plague was epidemic caused by a complex series of microbial strains known then b yersinia pestis these strains live in the digestive tract of fleas that live with rats and humans are known, including fleas that live with humans b Palex irritans these bacteria For reasons not known to epidemiologists today reproduce periodically and regularly in the stomach of Albarghot in sufficient quantities to cause a blockage threatens famine flea.
During the feeding of the flea itself works then the secretion of large numbers of bacteria Y. Pestis to the victim through a hole in the skin, and this process is necessary for the progress of the epidemic because it can not bacteria Y. Pestis to cross the skin health is ailing.
And carry strains of many bacteria of the epidemic, but in Europe the most important vector for these bacteria is a Rat Black, who lives near human settlements, but the fleas are responsible for the plague of movement by other means include all domestic animals and pets with the exception of horse away smelled bad fleas, and the lack of this pet makes fleas turn to humans.
The largest manifestation of the plague is in the form of bubonic bubonic, which is still thriving in some areas of the Far East takes its evolution since the time of injury Jawaly six days and the viewer is his first appearance bag pus black at the site of the bite, followed by enlarged lymph nodes in the armpit and the hip joint or the neck and in accordance with to the bite site, so that they are double or boil, and be the next stage for bleeding under the skin causing tarnished Arjoinepallon, this bleeding causes the poisoning of the nervous system so as to lead to disorders psychological, neurological and despite a, bubonic plague is the least were killed between all forms of plague, but it still kills between 50 to 60 percent of its victims.
The second form of plague is pneumonic plague pneumonic plague, which is more lethal and can be spread directly from a victim to another, and this plague affects the lungs and after a short period to two days or three days to get a rapid decline in the heat of the body followed by a cough and secretion of a blood clot in the lungs through the mouth contains the bacteria Y. Pestis, so that transmission is possible through the air and following inflammation for paralysis of the nervous system, coma and death rate resulting from this injury is between 95 to 100 percent, and this form of plague is the one who invaded England and especially London between 1964 and 1965.
The third form of plague is a septicaemic plague, septic to be carried by insects and the mortality rate among those infected are always 100 percent but this figure fortunately rare.