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Spatio-Temporal Distribution of Malaria in Perak, Malaysia

Advances in Infectious Diseases 2015年第4期5卷 154-161页

作者： Norzawati Yoep Hazrin Hasim ummi nadiah yusoff Mahani yusoff Noor Rizawati Mahpot Institute for Public Health Ministry of Health Kuala Lumpur Malaysia Vector Borne Disease Control Unit Perak State Health Department Ministry of Health Ipoh Malaysia

Malaria incidence in Perak, Malaysia has generally declined, but there remain regions of high incidence. The spatio-temporal distribution pattern of malaria in Perak was studied using Geographical Information Systems (GIS) and spatial statistical tools. Malaria data cases at the subdistrict level in Perak from 2007 to 2011 were analysed to determine the spatial and temporal distribution patterns of malaria incidence. Geographical Information Systems (GIS) and spatial statistical tools were used to identify spatial correlation in the data and malaria hot-spots. Spatial correlation was tested by using an autocorrelation method called Moran’s I. Hot spot analysis was done using Getis-Ord G*?statistic technique. Malaria incidence rates were categorized into 3 classes to map the spatial distribution. Malaria cases in Perak were geo-spatially clustered. Most of the hot spots locations were in Kenering, Ulu Kinta, Gerik and Kampar sub-districts. The prevalence of malaria among foreigners was noticeably higher than Malaysians. Improved surveillance of foreign workers can prevent outbreaks and identify high risk areas. This study implies that geographic-based mapping and information system are needed for an effective malaria control.

关键词： Malaria Spatial GIS Geocoding

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