Table 2 Surveillance results in the 45 surveillance sites along the Yangtze River
Time of exposure | Sites positive | Mice dissected | Mice positive | Worms collected | Infection rate (%) | Worm burden* |
|---|---|---|---|---|---|---|
12-13 May 2009 | 1 | 886 | 2 | 2 | 0.23 | 1.00 |
10-11 June 2009 | 2 | 866 | 2 | 4 | 0.23 | 2.00 |
10-11 July 2009 | 0 | 866 | 0 | 0 | 0.00 | 0.00 |
10-11 Aug 2009 | 1 | 886 | 4 | 6 | 0.45 | 1.50 |
6-7 Sept 2009 | 8 | 866 | 15 | 43 | 1.73 | 2.87 |
Subtotal | 12 | 4,370 | 23 | 55 | 0.53 | 2.39 |
30-31 May 2010 | 1 | 829 | 6 | 26 | 0.72 | 4.33 |
18-19 June 2010 | 2 | 737 | 6 | 16 | 0.81 | 2.67 |
14-15 July 2010 | 0 | 795 | 0 | 0 | 0.00 | 0.00 |
12-13 Aug 2010 | 0 | 652 | 0 | 0 | 0.00 | 0.00 |
9-10 Sept 2010 | 0 | 830 | 0 | 0 | 0.00 | 0.00 |
Subtotal | 3 | 3,843 | 12 | 42 | 0.31 | 3.50 |
Total | 15 | 8,213 | 35 | 97 | 0.43 | 2.77 |