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Table 1 Annual number of notified leptospirosis and incidence rate by sex, age and occupation and the proportion of case in China, 2005–2015

From: Epidemiological shift and geographical heterogeneity in the burden of leptospirosis in China

Characteristics Number of cases (per 100 000 people) Total IRa
2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015  
Sex Female 439 (0.07) 217 (0.04) 300 (0.05) 254 (0.04) 197 (0.03) 218 (0.04) 134 (0.02) 154 (0.03) 156 (0.03) 207 (0.04) 131 (0.02) 2407 0.03
  Male 1026 (0.16) 500 (0.08) 658 (0.10) 675 (0.11) 462 (0.08) 500 (0.08) 289 (0.05) 337 (0.06) 280 (0.05) 349 (0.06) 280 (0.04) 5356 0.08
Age 0–9 41 (0.03) 28 (0.02) 34 (0.03) 20 (0.02) 18 (0.01) 10 (0.00) 8 (0.01) 4 (0.00) 5 (0.00) 6 (0.00) 3 (0.00) 177 0.01
  10–19 283 (0.13) 116 (0.06) 137 (0.07) 99 (0.06) 83 (0.05) 52 (0.03) 33 (0.02) 34 (0.03) 15 (0.01) 24 (0.02) 22 (0.01) 898 0.05
  20–29 236 (0.14) 86 (0.06) 107 (0.07) 120 (0.08) 70 (0.04) 62 (0.04) 40 (0.02) 47 (0.02) 48 (0.03) 71 (0.04) 45 (0.02) 932 0.05
  30–39 347 (0.14) 140 (0.07) 174 (0.09) 174 (0.09) 112 (0.06) 131 (0.07) 66 (0.04) 67 (0.04) 53 (0.03) 89 (0.05) 63 (0.03) 1416 0.07
  40–49 228 (0.12) 140 (0.07) 202 (0.10) 180 (0.09) 126 (0.06) 159 (0.08) 99 (0.05) 126 (0.06) 106 (0.05) 142 (0.07) 83 (0.03) 1591 0.07
  50–59 217 (0.15) 130 (0.08) 205 (0.12) 210 (0.12) 137 (0.08) 167 (0.10) 101 (0.08) 97 (0.07) 92 (0.07) 111 (0.08) 95 (0.05) 1562 0.09
  60–69 87 (0.09) 53 (0.06) 75 (0.08) 93 (0.10) 92 (0.09) 112 (0.12) 55 (0.06) 84 (0.09) 83 (0.09) 84 (0.09) 83 (0.06) 901 0.08
  70–79 16 (0.03) 15 (0.03) 23 (0.04) 30 (0.05) 20 (0.04) 27 (0.05) 20 (0.04) 32 (0.06) 23 (0.05) 22 (0.04) 25 (0.04) 253 0.04
  80–89 1 (0.00) 0.00 6 (0.04) 4 (0.02) 1 (0.00) 0.00 3 (0.02) 3 (0.02) 4 (0.02) 5 (0.03) 3 (0.01) 30 0.02
  90+ 0.00 0.00 1 (0.07) 0.00 0.00 0.00 0.00 0.00 1 (0.05) 0.00 1 (0.05) 3 0.02
Occupation Agriculture 1119 (0.32) 500 (0.15) 721 (0.22) 726 (0.24) 526 (0.18) 571 (0.22) 312 (0.11) 387 (0.14) 312 (0.12) 466 (0.19) 305 (0.13) 5944 0.18
Services 263 (0.11) 125 (0.05) 148 (0.06) 110 (0.03) 90 (0.02) 63 (0.02) 54 (0.02) 39 (0.01) 54 (0.02) 56 (0.02) 56 (0.02) 1058 0.04
Case classification Confirmed 120 227 267 249 158 229 178 182 239 321 233 2403  
Clinical 1271 415 594 600 406 436 212 247 123 171 113 4588  
Suspected 74 75 97 80 95 53 33 58 78 64 65 772  
  1. amean annual reported incidence rate