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http://dx.doi.org/10.11108/kagis.2015.18.3.089

Spatio-Temporal Clustering Analysis of HPAI Outbreaks in South Korea, 2014  

MOON, Oun-Kyong (Animal and Plant Quarantine Agency)
CHO, Seong-Beom (College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University)
BAE, Sun-Hak (Deptartment of Geography Education, Kangwon National University)
Publication Information
Journal of the Korean Association of Geographic Information Studies / v.18, no.3, 2015 , pp. 89-101 More about this Journal
Abstract
Outbreaks of highly pathogenic avian influenza(HPAI) subtype H5N8 have occurred in Korea, January 2014 and it continued more than a year until 2015. And more than 5 million heads of poultry hads been damaged in 196 farms until May 2014. So, we studied the spatial, temporal and spatio-temporal patterns of the HPAI epidemics for understanding the propagation and diffusion characteristics of the 2014 HPAI. The results are expressed using GIS. Throughout the study period three epidemic waves occurred over the time. And outbreaks made three clusters in space. First spatial cluster is adjacent areas of province of Chungcheongbuk-do, Chungcheongnam-do and Gyeonggi -do. Second is Jeonlabuk-do Gomso Bay area. And the last is Naju and Yeongam in Jeollanam-do. Also, most of spatio-temporal clusters were formed in spatially high clustered areas. Especially, in Gomso Bay area space density and spatio-temporal density were concurrent. It means that the effective prevention activity for HPAI was carried out. But there are some exceptional areas such as Chungcheongbuk-do, Chungcheongnam-do, Gyeonggi-do adjacent area. In these areas the outbreak density was high in space but the spatio-temporal cluster was not formed. It means that the HPAI virus was continuing inflow over a long period.
Keywords
HPAI(Highly Pathogenic Avian Influenza); Epidemiology; GIS; Spatio-Temporal Analysis;
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