Table 2. Geographical distribution of clonorchiasis among Patients in Heilongjiang Province.
| Locality a | 2009 |
2010 |
2011 |
2012 |
||||
|---|---|---|---|---|---|---|---|---|
| % | No./N | % | No./N | % | No./N | % | No./N | |
| Songhua River and Nen River | 23.60 | 181/767 | 22.41 | 298/1330 | 26.60‡ | 315/1184 | 35.67* | 412/1155 |
| (1) Harbin | 24.58 | 117/476 | 21.93 | 191/871 | 25.83 | 203/786 | 34.53* | 280/811 |
| (2) Suihua | 22.43 | 24/107 | 30.77 | 44/143 | 30.43 | 42/138 | 36.21 | 42/116 |
| (3) Jiamusi | 26.51 | 22/83 | 25.78 | 33/128 | 30.16 | 38/126 | 44.34† | 47/106 |
| (4) Qitaihe | 10.00 | 1/10 | 8.33 | 1/12 | 16.67 | 4/24 | 20.00 | 1/5 |
| (5) Mudanjiang | 30.00 | 6/20 | 11.11 | 4/36 | 16.67 | 2/12 | 0.00 | 0/6 |
| (6) Daqing | 14.81 | 8/54 | 22.12 | 23/104 | 31.25 | 25/80 | 45.05† | 41/91 |
| (7) Qiqihar | 17.65 | 3/17 | 5.56 | 2/36 | 5.56 | 1/18 | 5.00 | 1/20 |
| Ussuri River | 11.11 | 4/36 | 14.06 | 9/64 | 17.86 | 10/56 | 22.22 | 10/45 |
| (8) Shuangyashan | 8.33 | 2/24 | 16.67 | 7/42 | 20.00 | 9/45 | 32.26 | 10/31 |
| (9) Jixi | 16.67 | 2/12 | 9.09 | 2/22 | 9.09 | 1/11 | 0.00 | 0/14 |
| Heilong River | 16.42 | 11/67 | 10.53 | 10/95 | 11.84 | 9/76 | 19.74 | 15/76 |
| (10) Hegang | 18.52 | 5/27 | 15.09 | 8/53 | 25.93 | 7/27 | 28.89 | 13/45 |
| (11) Heihe | 16.00 | 4/25 | 7.69 | 2/26 | 5.00 | 1/20 | 13.33 | 2/15 |
| (12) Yichun | 25.00 | 2/8 | 0.00 | 0/4 | 4.17 | 1/24 | 0.00 | 0/9 |
| (13)Daxinganling area | 0.00 | 0/7 | 0.00 | 0/12 | 0.00 | 0/5 | 0.00 | 0/7 |
a locality from the province in Figure 1. No.: Number positive; N: Number examined; * p<0.05 2012 vs 2009, 2012 vs 2010, 2012 vs 2011; † p<0.05 2012 vs 2009, 2012 vs 2010; ‡p<0.05, 2010 vs 2011