title: Malaria risk: estimating clinical episodes of malaria.
abstract: Estimates of the disease burden caused by malaria are crucial for informing malaria control programmes. Snow and colleagues claim that their estimate of 515 million cases of malaria caused by Plasmodium falciparum globally is up to 50% higher than that reported by the World Health Organization (WHO), and 200% higher for areas outside Africa. However, this comparison refers to the WHO's estimates from 1990 and 1998, and not to the range of 300 million to 500 million that the WHO has used since 2000 (ref. 2). Both groups agree that the burden of malaria disease outside Africa, especially in South Asia, is greater than was estimated in the 1990s.
authors.affiliation: World Health Organization, Roll Back Malaria Department, 1211 Geneva, Switzerland.
authors.forename: Bernard L
authors.initials: BL
authors.lastname: Nahlen
authors.forename: Eline L
authors.initials: EL
authors.lastname: Korenromp
authors.forename: John M
authors.initials: JM
authors.lastname: Miller
authors.forename: Kenji
authors.initials: K
authors.lastname: Shibuya
mesh_terms: D000818:Animals; D003140:Communicable Disease Control / Q000639:trends; D014943:Global Health; D006801:Humans; D015994:Incidence; D016778:Malaria, Falciparum / Q000453:epidemiology* / Q000517:prevention & control / Q000635:transmission; D010963:Plasmodium falciparum; D015203:Reproducibility of Results; D014944:World Health Organization