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ขอความกรุณาท่านผู้รู้ช่วยแปลบทความให้หน่อยครับ ติดต่อทีมงาน

คือผมแปลแล้ว เรียบเรียงไปไม่เป็นประโยคเลยครับ แล้วบ้างสำนวนก็งง ๆ ครับ ท่านใดพอช่วยได้ช่วยหน่อยนะครับ
In film and literature, malaria, the mosquito-borne disease, has an exotic sound. It calls to mind images of British colonial coffee plantations in Africa or courageous explorers sailing down the Amazon, taking quinine pills and sleeping at night under mosquito nets. In reality, the disease-which can cause acute fever and chills, headache, muscle ache, fatigue, and, sometime, death-has created a public-health crisis in the tropical and subtropical regions of the globe where it is gaining in force each year.
There were 1,102 cases of malaria in the United States in 1989. Globally, the statistics are much more serious. More than 100 million people in areas like Egypt, southern Africa, parts of Southeast Asia, India, Central America, Papua New Guinea and Mexico suffer from malaria each year, and mearly two million of them die, In Afric:-) quarter of all children between the ages of one and four dies from it. In Sri Lanka, where international spraying and drug distribution programs once reduced the number of annual cases to 17, there are now an estimated three quarters of a million cases of malaria per year.
Malaria is neither a virus like polio nor a bacterium like tuberculosis. Rather, it’s a parasite1  that invades red blood cells and has a three-stage life cycle. Infection starts out with a mosquito bite that releases a few of the parasites into the human bloodstream. The invaders travel to the liver where the body’s cell hide them from the immune system, allowing them to multiply. Soon afterwards, the parasites burst out of the liver, and attack red blood cells. These, too, eventually burst and release still more parasites, triggering malaria’s symptoms.
In the 1950s, malaria was believed to be on the verge of eradication. The introduction of insecticides such as DDT seemed to signal the end of the malaria-carrying mosquito in certain countries. Even if you had contracted malaria, you could have been with chloroquine, a synthetic quinine-like drug.
Forty years later, malaria is making a comeback. The parasite has developed a resistance to familiar pesticides like DDT and to chloroquine. As a precaution, travelers continue to take chloroquine or other drugs prior to, during and after leaving a malarious area. In areas where malaria is drug-resistant, new medications are needed and many researchers say a vaccine is a must. Developing an effective one could save hundreds of thousands of lives.
Currently, researchers are investigating three possible plans of attack for a vaccine. One would kill the parasites, before they enter the liver cells and while they’re in them. Another would attack the parasite in its second stage, destroying infected red blood cells. The third would create antibodies that would be ingested by a biting mosquito and stop the mature parasites from developing. However, no one has yet found the formula for an effective inoculation.
Most vaccines, like those for smallpox or polio, consist of dead or modified forms of the same dangerous bugs that cause the disease. The vaccine helps the immune system recognize and attack the invader. However, previous research has shown that standard types of vaccines are ineffective against malaria because the infected mosquitoes don’t carry enough of the parasite to create a useful vaccine.
One of the more interesting approaches to the problem is that of Manuel Patarroyo, M.D., founder and director of the Institute of Immunology in Bogota, Colombia, In 1986 he created a synthetic vaccine, hoping that the body’s own immune cells would kill the parasite.
Perhaps because a malaria vaccine seems far in the future, many experts are suggesting that attention should continue to be focused on areas like prevention, control and treatment. One new strategy for controlling transmission is pesticide-treated bed nets, which protect sleeping people from mosquitoes and kill any bugs that happen to land on the net.
Some researchers are exploring folklore treatments in the hopes of developing stronger drugs. Derivatives of qing-hao, a weed used in traditional Chinese medicine to treat fever, are being studied by scientists.
While these approaches are promising, none have proven tough enough to stop malaria. Until researchers find the parasite’s Achilles heel, the disease will continue to infect millions
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1parasite: an organism that grows and feeds on or in a different organism but contributes nothing to the survival of that organism.

จากคุณ : skyman23
เขียนเมื่อ : 24 ต.ค. 53 12:02:28




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