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Mobile population dynamics and malaria vulnerability: a modelling study in the China-Myanmar border region of Yunnan Province, China

Overview of attention for article published in Infectious Diseases of Poverty, April 2018
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Title
Mobile population dynamics and malaria vulnerability: a modelling study in the China-Myanmar border region of Yunnan Province, China
Published in
Infectious Diseases of Poverty, April 2018
DOI 10.1186/s40249-018-0423-6
Pubmed ID
Authors

Tian-Mu Chen, Shao-Sen Zhang, Jun Feng, Zhi-Gui Xia, Chun-Hai Luo, Xu-Can Zeng, Xiang-Rui Guo, Zu-Rui Lin, Hong-Ning Zhou, Shui-Sen Zhou

Abstract

The China-Myanmar border region presents a great challenge in malaria elimination in China, and it is essential to understand the relationship between malaria vulnerability and population mobility in this region. A community-based, cross-sectional survey was performed in five villages of Yingjiang county during September 2016. Finger-prick blood samples were obtained to identify asymptomatic infections, and imported cases were identified in each village (between January 2013 and September 2016). A stochastic simulation model (SSM) was used to test the relationship between population mobility and malaria vulnerability, according to the mechanisms of malaria importation. Thirty-two imported cases were identified in the five villages, with a 4-year average of 1 case/year (range: 0-5 cases/year). No parasites were detected in the 353 blood samples from 2016. The median density of malaria vulnerability was 0.012 (range: 0.000-0.033). The average proportion of mobile members of the study population was 32.56% (range: 28.38-71.95%). Most mobile individuals lived indoors at night with mosquito protection. The SSM model fit the investigated data (χ2 = 0.487, P = 0.485). The average probability of infection in the members of the population that moved to Myanmar was 0.011 (range: 0.0048-0.1585). The values for simulated vulnerability increased with greater population mobility in each village. A high proportion of population mobility was associated with greater malaria vulnerability in the China-Myanmar border region. Mobile population-specific measures should be used to decrease the risk of malaria re-establishment in China.

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Geographical breakdown

Country Count As %
Unknown 64 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 15 23%
Student > Ph. D. Student 8 13%
Student > Bachelor 6 9%
Student > Master 5 8%
Other 3 5%
Other 11 17%
Unknown 16 25%
Readers by discipline Count As %
Medicine and Dentistry 17 27%
Social Sciences 6 9%
Nursing and Health Professions 4 6%
Biochemistry, Genetics and Molecular Biology 3 5%
Mathematics 3 5%
Other 13 20%
Unknown 18 28%