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Malaria

2013-11-13 来源: 类别: 更多范文

Malaria Malaria OverviewMalaria is an infection of the blood that is carried from person to person by mosquitoes. The disease has been recognized for thousands of years and once was found almost everywhere except in the most northern areas of the world. Malaria has been wiped out in North America, Western Europe, and Russia. It remains a serious problem in much of the tropical and subtropical world, however. Millions of people continue to be infected every year, and probably up to 1 million of them die. Although the United States is malaria-free, hundreds of cases a year are still reported here. Most of these are people who acquired the disease overseas. Malaria CausesMalaria is caused by protozoan of the genus Plasmodium. · Infection begins with a bite from an infected mosquito. · The parasite travels from the mosquito to your liver, where the parasite begins to reproduce. · The parasite leaves the liver and travels to the bloodstream, where it infects red blood cells. The parasite reproduces in the red blood cells, which destroys the cells and releases more parasites into the bloodstream. · If another mosquito bites an infected person, that mosquito can then carry the infection to someone else. · There are 4 species malaria, people, infected, treated, infection, disease, falciparum, develop, blood, mosquito, liver, drug, years, resistance, parasite, found, fever, doctor, common, year, world, vivax, type, treatment, should, severe, several, rarely, ovale, medications, life, infections, incubation
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