Table 2.
Comparison of three different diagnostic tests for Schistosoma japonicum infection in human stool, the Kato-Katz thick smear, the miracidium hatching test, and a PCR assay, conducted in regions where schistosomiasis has reemerged in China
| PCR+ | PCR− | |
|---|---|---|
| Miracidia hatching test (1 sample) and Kato-Katz | ||
| Kato-Katz+ and Hatch+ | 5 | 3 |
| Kato-Katz+ and Hatch− | 2 | 1 |
| Kato-Katz− and Hatch+ | 5 | 1 |
| Kato-Katz− and Hatch− | 4 | 85 |
| Miracidia hatching test (all samples) and Kato-Katz | ||
| Kato-Katz+ and Hatch+ | 6 | 4 |
| Kato-Katz+ and Hatch− | 1 | 0 |
| Kato-Katz− and Hatch+ | 7 | 4 |
| Kato-Katz− and Hatch− | 2 | 82 |
Each participant was requested to submit three stool samples, one per day from three consecutive days. Each sample was examined using the miracidium hatching test. One sample per person was examined using the Kato-Katz thick smear procedure (preparing three slides per person) and polymerase chain reaction (PCR). The table presents the results of the miracidium hatch test performed on the first stool sample (“1 sample”) and the combined results of the miracidium hatching tests from all samples from an individual (“all samples”).