Author: Chen, Chen; Lu, Shan; Du, Pengcheng; Wang, Haiyin; Yu, Weiwen; Song, Huawen; Xu, Jianguo
Title: Silent geographical spread of the H7N9 virus by online knowledge analysis of the live bird trade with a distributed focused crawler Document date: 2013_12_18
ID: t2zlhamq_14
Snippet: We also drew a topological city map showing the spread of the H7N9 virus based on live bird trade information (Figure 3) . A total of 63 cities, including 18 in which infections were reported, were clustered and connected via both knowledge-based links (i.e., IC and CC) to the first-wave cities. It should be mentioned that nine cities with diagnosed infected patients and two cities with only virus-positive birds had no knowledge-based link with t.....
Document: We also drew a topological city map showing the spread of the H7N9 virus based on live bird trade information (Figure 3) . A total of 63 cities, including 18 in which infections were reported, were clustered and connected via both knowledge-based links (i.e., IC and CC) to the first-wave cities. It should be mentioned that nine cities with diagnosed infected patients and two cities with only virus-positive birds had no knowledge-based link with the first-wave cities (Figure 3 ). Only four cities had live poultry specimens that tested positive for H7N9 virus, namely, Hefei (Anhui Province), Nantong (Jiangsu Province), Jinhua (Zhejiang Province), and Dongguan (Guangdong Province).
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