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. 2014 Aug 14;8(8):e3015. doi: 10.1371/journal.pntd.0003015

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© 2014 Gao et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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(a) In 1971, during the JE pandemic, the 11 provinces where JE incidence was higher than the national average (20.92/100,000) were mainly distributed in the coastal areas of eastern China. The colors red, yellow, and light green in panel “a” indicate provinces with incidence higher than 20.00/100,000, 10.01–20/100,000 and lower than 10.00/100,000, respectively. (b) In 2006, the necessary local governments provided a large proportion of immunization costs, and JE incidence rates in economically developed regions of eastern China were far lower than the national average (0.58/100,000). The colors red, yellow, and light green in panel “b” indicate provinces with incidence higher than 0.60/100,000, 0.11–0.60/100,000, and lower than 0.10/100,000, respectively. The grid shadow showed 16 provinces that had implemented JE immunization programs by 2006. (c) In 2011, after the JE vaccine was included in the EPI, Sichuan, Yunnan, Guizhou, and other underdeveloped areas in southwest China still had JE incidence rates higher than the national average (0.12/100,000). The colors red, yellow, and light green in panel “c” indicate provinces with incidence higher than 0.20/100,000, 0.11–0.20/100,000 and lower than 0.10/100,000, respectively. The blank areas in panels “a,” “b,” and “c” represent Xinjiang, Tibet, and Qinghai, respectively, which are considered JE-free areas. The data of JE cases in Taiwan (blank) are not included in the statistics. Abbreviations: HLJ: Heilongjiang; JL: Jilin; LN: Liaoning; NMG: Inner Mongolia; BJ: Beijing; TJ: Tianjin; HB: Hebei: HN: Henan; SD: Shandong; SX: Shanxi; SaX: Shaanxi; NX: Ningxia; GS: Gansu; QH: Qinghai; XJ: Xinjiang; XZ: Tibet; SC: Sichuan; CQ: Chongqing; YN: Yunnan; GZ: Guizhou; GX: Guangxi; GD: Guangdong; GX: Guangxi; HaiN: Hainan; HuN: Hunan; HuB: Hubei; JX: Jiangxi; JS: Jiangsu; ZJ: Zhejiang; AH: Anhui; FJ: Fujian; SH: Shanghai; TW: Taiwan.