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Regional classification of malaria in Shandong Province, 2005–2015. The white, grey and black represent the Eastern Lu, Southern Lu and Northern Lu, respectively. The red column indicated the total malaria cases reported in 2005–2015 in each county. The square H represents the infectious hospitals set up in Shandong Province. The letter in the map was indicated as following: a Zhifu, b Huancui, c Shibei, d Shizhong, e Taishan, f Rencheng, g Shanxian
