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Mapping the global extent of malaria in 2005
Carlos A Guerra1, Robert W Snow, Simon I Hay
1Spatial Ecology and Epidemiology Group, Tinbergen Building, Department of Zoology, University of Oxford, South Parks Road, Oxford OX1 3PS, UK.
Trends in Parasitology
|June 27, 2006
Summary
Global malaria risk maps show billions at risk from Plasmodium falciparum and Plasmodium vivax. Most people exposed to Plasmodium falciparum malaria live in just ten countries.
Area of Science:
- Global health
- Epidemiology
- Parasitology
Background:
- Malaria remains a significant global health threat, caused by Plasmodium parasites.
- Understanding the spatial distribution of malaria transmission is crucial for targeted interventions.
Purpose of the Study:
- To map the global spatial limits of Plasmodium falciparum and Plasmodium vivax transmission.
- To estimate the human population at risk for these malaria parasites.
Main Methods:
- Utilized guidelines for malaria chemoprophylaxis for travelers.
- Incorporated altitude limits of dominant vector species.
- Assessed climate suitability for malaria transmission.
- Considered human population density thresholds.
Main Results:
- Mapped the crude spatial limits for Plasmodium falciparum and Plasmodium vivax transmission globally.
- Estimated that 2.510 billion people were at risk of Plasmodium falciparum transmission in 2005.
- Estimated that 2.596 billion people were at risk of Plasmodium vivax transmission in 2005.
- Identified that 75% of humans exposed to Plasmodium falciparum risk reside in only ten countries.
Conclusions:
- Global malaria risk is substantial, affecting billions of people.
- A concentrated population burden of Plasmodium falciparum malaria exists in specific countries.
- These findings highlight the need for focused malaria control strategies.
