Mapping malaria transmission intensity using geographical information systems (GIS): an example from Kenya

被引:52
作者
Omumbo, J
Ouma, J
Rapuoda, B
Craig, MH
le Sueur, D
Snow, RW
机构
[1] KEMRI, Wellcome Trust Collaborat Programme, Nairobi, Kenya
[2] Minist Hlth, Div Vector Borne Dis, Nairobi, Kenya
[3] S African Med Res Council, Natl Malaria Res Programme, ZA-4013 Durban, South Africa
[4] Univ Oxford, John Radcliffe Hosp, Nuffield Dept Clin Med, Oxford OX3 9DU, England
来源
ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY | 1998年 / 92卷 / 01期
基金
英国惠康基金;
关键词
D O I
10.1080/00034989860120
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 ; 120402 ;
摘要
That there are so few examples of the use of epidemiological maps in malaria control may be explained by the lack of suitable, spatially defined data and of an understanding of how epidemiological variables relate to disease outcome. However, recent evidence suggests that the clinical outcomes of infection are determined by the intensity of parasite exposure, and developments in geographical information systems (GIS) provide new ways to represent epidemiological data spatially. In the present study, parasitological data from 682 cross-sectional surveys conducted in Kenya were abstracted and spatially defined. Risks of infection with Plasmodium falciparum among Kenyan children, estimated from combinations of parasitological, geographical, demographic and climatic data in a GIS platform, appear to be low for 2.9 million, stable but low for another 1.3 million, moderate for 3.0 million and high for 0.8 million. (Estimates were not available for 1.4 million children.) Whilst the parasitological data were obtained from a variety of sources across different age-groups and times, these markers of endemicity remained relatively stable within the broad definitions of high, moderate and low transmission intensity. Models relating ecological and climatic features to malaria intensity and improvements in our understanding of the relationships between parasite exposure and disease outcome will hopefully provide a more rational basis for malaria control in the near future.
引用
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页码:7 / 21
页数:15
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