african sleeping sickness

The article I chose to summarize, discusses either the important facts about the sombre ailment Trypanosomiasis which is also known as African stop sickness. According to the article, over 66 million men, women and children in sub-Saharan Africa suffer from African sleeping sickness. Human African trypanosomiasis (HAT) argon caused by two different leechs, Trypanosma burcei gambiense which is the most serious and the Trypanosoma brusei rhodesiense which is an astute illness and may last several weeks. The name of the real(a) parasite is called the Trypanosome and is transmitted to humans through the bite of a glossina fly (genus Glossina), when untreated trypanosomiasis ordain ultimately arrest in death. The article explains that the vector is found only in authorized parts of Africa. Its favored habitat is universal on watercourses, lakes and forests extending into ample areas of the savanna. Once a human or beast is bitten by an infected fly, the ino culated trypanosomes gradually proliferate and invade all the variety meat of the host. In most cases, many another(prenominal) an(prenominal) of the trypanosomes are sunk by the natural defenses of the immune system but many expire by evading and modifying their surface membrane. This process is known as antigenic variation.

Once this process occurs the infected individual may a variety of symptoms such as high fever, flunk and headache, vocalise pains, and itching. Over a period of time the uncomplainings resistance and immune system lasts exhausted and symptoms will worsen. The parasite then deve lops into the lymph and blood do cardiovasc! ular, endocrine, and kidney disorders. Once the disease reaches mature stages, the trypanosomes invades the entire central nervous system causing constitutional changes in the longanimouss behavior. In many cases, the patient can no longer concentrate; they become extraneous to their environment and usually experience mood changes. separate common side effects are extreme lethargy with bouts of aggressiveness,...If you deficiency to convey a full essay, order it on our website: BestEssayCheap.com

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