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Table 1 Characteristics of malaria cases at control stage and elimination stage in China

From: Comparative evaluation of the diagnosis, reporting and investigation of malaria cases in China, 2005–2014: transition from control to elimination for the national malaria programme

Characteristics Control stage (2005–2010) Elimination stage (2011–2014)
2005 2006 2007 2008 2009 2010 Average per year 2011 2012 2013 2014 Average per year
Number of cases 40,226 61,204 47,380 26,727 14,278 7506 32,887 4127 2453 3905 2924 3352
Incidence rate (per 100 000) 3.1 4.7 3.6 2.0 1.1 0.6 2.5 0.3 0.2 0.3 0.2 0.2
Cases by species
P. vivax 30,692 48,169 38,768 21,322 10,747 4956 25,776 2432 1021 897 851 5201
 (%) (76.3) (78.7) (81.8) (79.8) (75.3) (66.0) (78.4) (58.9) (41.6) (23.0) (29.1) (38.8)
P. falciparum 3771 2872 1691 1025 1043 1304 1951 1442 1354 2825 1844 7465
 (%) (9.4) (4.7) (3.6) (3.8) (7.3) (17.4) (5.9) (35.0) (55.2) (72.3) (63.1) (55.7)
 Others 5763 10,163 6921 4380 2488 1246 5160 253 78 183 229 743
 (%) (14.3) (16.6) (14.6) (16.4) (17.3) (16.6) (15.7) (6.1) (3.2) (4.7) (7.8) (5.5)
Cases by residence
 Local 36,009 55,999 43,489 24,180 12,413 5849 29,657 2639 1325 2413 1538 1979
 (%) (89.5) (91.5) (91.8) (90.5) (86.9) (77.9) (90.2) (63.9) (54.0) (61.8) (52.6) (59.0)
 Migrant 4217 5205 3891 2547 1865 1657 3230 1488 1128 1492 1386 1373
 (%) (10.5) (8.5) (8.2) (9.5) (13.1) (22.1) (9.8) (36.1) (46.0) (38.2) (47.4) (41.0)
Cases by locationa
 24 endemic provinces 40,182 61,130 47,312 26,659 14,221 7436 32,823 4033 2386 3801 2837 3264
 (%) (99.9) (99.9) (99.7) (99.8) (99.6) (99.1) (99.8) (97.7) (97.3) (97.3) (97.0) (97.4)
 7 non-endemic provinces 44 74 68 68 57 70 64 94 67 104 87 88
 (%) (0.1) (0.1) (0.3) (0.2) (0.4) (0.9) (0.2) (2.3) (2.7) (2.7) (3.0) (2.6)
Cases by reporting institutes
 Private clinics and hospitals 321 334 540 347 193 182 320 62 41 69 57 57
 (%) (0.8) (0.6) (1.1) (1.3) (1.3) (2.4) (1.0) (1.5) (1.7) (1.8) (2.0) (1.7)
 Town-level hospitals 24,433 44,923 34,466 17,870 8767 3449 22,318 1379 298 174 129 495
 (%) (60.7) (73.4) (72.7) (66.8) (61.4) (46.0) (67.9) (33.4) (12.2) (4.4) (4.4) (14.8)
 County-level hospitals 5400 5764 4919 3278 1742 865 3661 403 327 711 448 472
 (%) (13.4) (9.4) (10.4) (12.3) (12.2) (11.5) (11.1) (9.8) (13.3) (18.2) (15.3) (14.1)
 City-level hospitals 2562 2878 2490 1840 1352 1333 2076 1186 923 1342 1363 1204
 (%) (6.4) (4.7) (5.3) (6.9) (9.5) (17.8) (6.3) (28.7) (37.6) (34.4) (46.6) (35.9)
 Public health institutes 7510 7305 4965 3392 2224 1677 4512 1097 864 1609 927 1124
 (%) (18.7) (11.9) (10.5) (12.7) (15.6) (22.3) (13.7) (26.6) (35.2) (41.2) (31.7) (33.5)
Cases by originb
 Autochthonous cases 1507 253 92 67 480
 (%) (36.5) (10.3) (2.4) (2.3) (14.3)
 Imported cases 2620 2200 3813 2857 2872
 (%) (63.5) (89.7) (97.6) (97.7) (85.7)
  1. aEndemic provinces include Liaoning, Xinjiang, Hebei, Shanxi, Shaanxi, Shandong, Henan, Jiangsu, Shanghai, Zhejiang, Anhui, Hubei, Hunan, Jiangxi, Fujian, Guangdong, Hainan, Guangxi, Yunnan, Sichuan, Guizhou, Chongqing, Tibet, and Gansu; non-endemic provinces include Beijing, Tianjin, Inner Mongolia, Heilongjiang, Jilin, Qinghai, Ningxia, according to the national malaria elimination program [3]
  2. bOnly the origins of cases occurring within the period 2011–2014 were included in this study, because each malaria case was required to be classified as either autochthonous or imported since 2010, according to the national malaria elimination program [3]