| Age | City | Urban and rural junction | Rural | ||||||
| Number of people examined | Positive number | Positive rate (%) | Number of people examined | Positive number | Positive rate (%) | Number of people examined | Positive number | Positive rate (%) | |
| 7 | 319 | 91 | 28.53% | 639 | 298 | 46.64% | 320 | 207 | 64.69% |
| 9 | 320 | 115 | 35.94% | 640 | 314 | 49.06% | 320 | 199 | 62.19% |
| 12 | 320 | 60 | 18.75% | 640 | 195 | 30.47% | 320 | 135 | 42.19% |
| 14 | 312 | 62 | 19.87% | 632 | 154 | 24.37% | 320 | 92 | 28.75% |
| 17 | 319 | 31 | 9.72% | 639 | 97 | 15.18% | 320 | 66 | 20.63% |