What a comeback! Malaria on the move

Web MD

Malaria afflicted 515 million people in 2002, according to figures reported in the science journal Nature, up from World Health Organization estimates of 273 million cases in 1998. The majority of cases are contracted in sub-Saharan Africa, though nearly a quarter of cases occurred in the Western Pacific and Southeast Asia.
Professor Bob Snow of a medical research center in Nairobi, Kenya, called the number of cases “quite substantial,” according to Reuters. “We have taken a conservative approach to estimating how many attacks occur globally each year but even so the problem is far bigger than we previously thought,” said Snow.
People can become infected with malaria when bitten by a certain type of mosquito infected with the malaria parasite. In rare cases, people can get malaria if they come into contact with infected blood or a fetus may get the disease from its mother. After being bitten by an infected mosquito, the parasite infects human liver and red blood cells. Most malaria infections cause flulike symptoms (such as high fever, chills, muscle pain, diarrhea) that come and go in cycles as the disease progresses. One type of malaria may cause more serious problems, including heart, lung, kidney, or brain damage and possibly death.

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