Flea

wide-prevalence, most typically in temperate to tropical seaboard regions. The disease manifests as a febrile illness with an acute onset and mild to severe morbidity, including severe encephalitis and fatalities. Its classic form is associated with a rat flea and rat cycle, although other ectoparasites and animal species are involved in the circulation of the etiologic agent, Rickettsia typhi. The disease was first described in 1913 in Atlanta, GA, and its distribution was progressively…

populations. Plague caused by bacterium Yersinia pestis. When it enters to fleas body,it lives in digestive system and multiply in flea. when flea bite to animal or human, then they will infected. These infected fleas lived on rats. Vicious cycle was kept going like infected fleas would bite a rat then rats became infected. Rats are the host now when rats died of the plague fleas found a new host to live on . When the fleas bite humans in order to feed , humans infected and formed as a…

Try 5 tips below and you can prevent Lyme disease Lyme disease is an illness caused by a bacterial infection, and the infection is spread by the bite of ticks. According to the Centers for Disease Control and Prevention, the United States receive no less than 300,000 new patients every year. This disease affects all people without being limited by age and gender. Lyme disease also has some of the symptoms similar to symptoms of other diseases. If not treated immediately, it can damage the…

The Bubonic Plague was a disease carried by rodents. It was caused by bacteria named Yersinia pestis that was found in the intestines of the fleas on the rodents. The bacteria blocked the intestines of the fleas causing the fleas to starve which made the fleas want to feed often. The fleas would try to clear the blockage by vomiting. When the fleas vomited up the bacteria when they were feeding on someone, that bacteria would get into the bite and that person would become infected with the…

hatch on carpeted areas. Fleas feed on the blood of animals and humans, consuming 15 times their own body weight. They have a nasty bite that causes skin irritations, and can contribute to other health problems. Furthermore, they are associated with numerous diseases, even those known to have caused death. Fleas are resilient and are extremely difficult to kill. Their outer exoskeleton serves as an armored barrier to protect them from being smashed. In addition, fleas are capable of…

Background Flea markets as Nostalgia – Virtual existence Edward S. Casey defines nostalgia as an emotional response to the recognition of an impossible return . It comes with the feeling of fear and sadness missing particular places and people in the past that are lost and cannot be regained anymore. We are nostalgic mainly about specific memories that have been emotionally powerful to us and which we now miss. We recognize the past as intrinsically better than the present because we tend to…

important condition that spread the Black Death was the black rats that carried the fleas, which were infected with the disease. The pervious stated conditions of the decline in predator against the rats and ill-maintained living quarters, both contributed to the boom of the rodent population and ultimately a possible increase in the flea population, but most likely rat population spread out around Europe taking the fleas with them. By looking at the conditions, I believe that the Black Death…

mid-fourteenth century is by and large the most devastating epidemic of medieval European history. Long thought to have been brought to the European continent by flea-carrying Asian traders, the plague left a crippling trail of death and destruction in its wake. Some scholars now challenge the source of the plague, saying it could not have come from fleas or rats but rather a human-contact transmitted type of hemorrhagic fever. Nevertheless, these facts remain clear: the disease ravaged Europe…

esophagus. This in turn, caused the fleas to overindulge themselves, as the blood they were feeding on pooled in the proventriculus, until the point of regurgitation of blood contaminated with the bacteria (Hinnebusch et al., 1996). This modification of the hms locus almost caused the extinction of many countries, as the more populated areas such as Italy and Paris suffered losses of up to 80% of their pre-plague levels due to the levels of transference caused by the fleas…

showing that fleas were the ones spreading the plague, how unsanitary the towns were, and how human-to-human contact spread the plague.…