Detection methods | No. examined | No. (%) of positive | No. (%) of samples showing the antibody titers at | ||
---|---|---|---|---|---|
 |  |  | 1:50 | 1:100 | ≥1:200 |
TLA-ELISA | 259 | 42 (16.2) | 25 (9.7) | 8 (3.1) | 9 (3.5) |
GRA1-ELISA | 259 | 42 (16.2) | 25 (9.7) | 7 (2.7) | 10 (3.9) |
GRA7-ELISA | 259 | 44 (17.0) | 26 (10.0) | 9 (3.5) | 9 (3.5) |