Ebola Hemorrhagic Fever (Ebola Hf) Essay

1151 words - 5 pages

Ebola hemorrhagic fever (Ebola HF) is a severe, and often fatal disease in humans and in primates that has accure irregularly since its discovery in 1976. The Ebola virus is named after a river in the Democratic Republic of the Congo in Africa, where it was first discovered. The virus is one of two members of the family of RNA viruses called the Filvoridae. There are four types of the Ebola virus, but only three of the four, cause disease in humans: Ebola-Zaire, Ebola-Sudan and Ebola-Ivory Coast. The fourth, Ebola Reston, only causes disease in primates. The virus is a level four pathogen (witch is higher than aids) Viral hemorrhagic fevers are caused by viruses from four families: filoviruses, arena viruses, flaviviruses, and bunya viruses. The usual hosts for most of these viruses are rodents or arthropods (such as ticks and mosquitoes). In some cases, the natural host for the virus is not known. Confirmed cases of the virus have been reported in the Democratic Republic, Gabon, Sudan, the Ivory Coast, and Uganda. No case of the deseas has been reported in the United States. Some researchers became infected with the virus but never became ill.The manner in which the virus first appears in a human at the start of an outbreak has not been determined, but researchers think that the first person becomes infected through contact with an infected animal. Symptoms of the Ebola virus begin four to sixteen days after the person has been infected. The incubation period for the Virus ranges from two to twenty one days. Within a week, a raised rash appears over the entire body; the rash is often Hemorrigic. Hemorrhaging generally occurs from the gastrointestinal tract, causing the patient to bleed from both the mouth and rectum. Beginning symptoms are headaches, breathing problems, fevers, red eyes, hiccups, chills, muscle aches, loss of appetite and shock. As the disease progress, patients experience diarrhea, rash, sore throat, vomiting, and abdominal and chest pain. The patients have little kidney and liver functions, and have internal and external bleeding. Their blood does not clot which can cause some serious problems, like causing the capillaries to bleed into surrounding tissue. Later symptoms are; eye inflammation, depression, increased sense of pain in the skin, and bleeding from the eyes, ears and nose. The death of a patient occurs. Diagnosing the Ebola virus in a person who has been infected only a few days is difficult because the early symptoms, such as red eyes and a skin rash are non-specific to the virus and are seen in other patients with diseases that occur much more frequently. But if the person has all of the symptoms, and infection with the Ebola virus, are suspected. Researchers don't understand why some people are able to recover from the virus and others are not. It is known that the patients who die usually have not developed a significant immune response to it at the time of death. The virus can easily spread...

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