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- Title
Microgeographic Heterogeneity of Border Malaria During Elimination Phase, Yunnan Province, China, 2011-2013.
- Authors
Xin Xu; Guofa Zhou; Ying Wang; Yue Hu; Yonghua Ruan; Qi Fan; Zhaoqing Yang; Guiyun Yan; Liwang Cui; Xu, Xin; Zhou, Guofa; Wang, Ying; Hu, Yue; Ruan, Yonghua; Fan, Qi; Yang, Zhaoqing; Yan, Guiyun; Cui, Liwang
- Abstract
To identify township-level high-risk foci of malaria transmission in Yunnan Province, China, along the international border, we retrospectively reviewed data collected in hospitals and clinics of 58 townships in 4 counties during 2011-2013. We analyzed spatiotemporal distribution, especially hot spots of confirmed malaria, using geographic information systems and Getis-Ord Gi*(d) cluster analysis. Malaria incidence, transmission seasonality, and Plasmodium vivax:P. falciparum ratio remained almost unchanged from 2011 to 2013, but heterogeneity in distribution increased. The number of townships with confirmed malaria decreased significantly during the 3 years; incidence became increasingly concentrated within a few townships. High-/low-incidence clusters of P. falciparum shifted in location and size every year, whereas the locations of high-incidence P. vivax townships remained unchanged. All high-incidence clusters were located along the China-Myanmar border. Because of increasing heterogeneity in malaria distribution, microgeographic analysis of malaria transmission hot spots provided useful information for designing targeted malaria intervention during the elimination phase.
- Subjects
YUNNAN Sheng (China); CHINA; MALARIA; PROTOZOAN diseases; INFECTIOUS disease transmission; GEOGRAPHIC information systems; MALARIA prevention; CLASSIFICATION of protozoa; DISEASE eradication; COMPARATIVE studies; HISTORY; RESEARCH methodology; MEDICAL cooperation; RESEARCH; RESEARCH funding; SEASONS; TIME; EVALUATION research
- Publication
Emerging Infectious Diseases, 2016, Vol 22, Issue 8, p1363
- ISSN
1080-6040
- Publication type
journal article
- DOI
10.3201/eid2208.150390