Table 3. The distribution of S. japonicum infections over time by baseline infection status.
| N | Infected at T1 (%) | Infected at T2 (%) | Infected at T1 and T2 (%) | |
| Cohort 1 * | ||||
| Infected at baseline | ||||
| No | 222 | 56 (25.2) | 11 (5.0) | 5 (2.3) |
| Yes | 202 | 83 (41.1) | 30 (14.9) | 16 (7.9) |
| Cohort 2 † | ||||
| Infected at baseline | ||||
| No | 315 | 21 (6.7) | 20 (6.3) | 7 (2.2) |
| Yes | 85 | 23 (27.1) | 24 (28.2) | 13 (15.3) |
*
Cohort 1 is composed of people from 10 villages in Xichang County where schistosomiasis was endemic. Participants were tested for S. japonicum infection in 2000 (T0), 2002 (T1) and 2006 (T2).
†
Cohort 2 is composed of people from 27 villages in two counties where schistosomiasis reemerged following reduction of S. japonicum infection prevalence below 1%. Participants were tested for S. japonicum infection in 2007 (T0), 2008 (T1) and 2010 (T2).