african sleeping sickness

The article I chose to summarize, discusses either the important facts about the somber ailment Trypanosomiasis which is also known as African quiescence 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) are caused by two different parasites, Trypanosma burcei gambiense which is the most serious and the Trypanosoma brusei rhodesiense which is an keen 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 tsetse fly (genus Glossina), when untreated trypanosomiasis ordain ultimately arrest in death. The article explains that the vector is found only in certain parts of Africa. Its favored habitat is common on watercourses, lakes and forests extending into vast areas of the savanna.
Once a human or beast is bitten by an infected fly, the inoculated trypanosomes gradually proliferate and invade all the organs 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 survive 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, joint pains, and itching. Over a period of time the uncomplainings resistance and immune system lasts exhausted and symptoms will worsen. The parasite then develops into the lymph and blood do cardiovascular, endocrine, and kidney disorders.
Once the disease reaches advanced stages, the trypanosomes invades the entire central nervous system causing extreme changes in the patients behavior. In many cases, the patient can no longer concentrate; they become indifferent to their environment and usually experience mood changes. separate common side effects are extreme lethargy with bouts of aggressiveness,...If you deficiency to get a full essay, order it on our website: Orderessay



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