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The global distribution of clinical episodes of Plasmodium falciparum malaria

Researchers led by Bob Snow of the Kenyan Medical Research Institute-Wellcome Trust Laboratories used new and existing data to map the incidence of the most severe form of malaria, caused by the parasite Plasmodium falciparum. Their results indicated that there were more than 500 million cases in 2002 — double the World Health Organization's estimate.