Table 2. Comparison of different types of lesions with three diagnostic tests.
| Lesion type | Duration of lesion |
PCR positives | SSS positives | Parasite grade of parasitologically confirmed CL lesions* | RDT positives | Parasite count of RDT positive lesions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 1+ | 2+ | 3+ | 4+ | 5+ | 6+ | 0 | 1+ | 2+ | 3+ | 4+ | 5+ | 6+ | |||||
| Papule | ≤4 months | 3 | 2 | 1 | 2 | 2 | 2 | |||||||||||
| 5–6 months | - | |||||||||||||||||
| 7–12 months | - | |||||||||||||||||
| > 12 months | - | |||||||||||||||||
| Nodule | ≤4 months | 13 | 11 | 2 | 3 | 5 | 1 | 1 | 1 | 5 | 2 | 1 | 1 | 1 | ||||
| 5–6 months | 6 | 4 | 2 | 1 | 2 | 1 | 1 | 1 | ||||||||||
| 7–12 months | - | |||||||||||||||||
| > 12 months | 2 | 2 | 1 | 1 | 1 | 1 | ||||||||||||
| aUlcers | ≤4 months | 17 | 11 | 6 | 4 | 3 | 3 | 1 | 2 | 2 | ||||||||
| 5–6 months | 10 | 8 | 2 | 3 | 3 | 2 | 6 | 1 | 3 | 2 | ||||||||
| 7–12 months | 3 | 1 | 2 | 1 | 1 | 1 | ||||||||||||
| > 12 months | - | |||||||||||||||||
| Plaque | ≤4 months | 2 | 1 | 1 | 1 | 1 | 1 | |||||||||||
| 5–6 months | 1 | 1 | 1 | |||||||||||||||
| 7–12 months | 1 | 1 | 1 | 1 | 1 | |||||||||||||
| > 12 months | - | |||||||||||||||||
| Other (satellite lesions) | ≤4 months | - | ||||||||||||||||
| 5–6 months | - | |||||||||||||||||
| 7–12 months | - | |||||||||||||||||
| > 12 months | 1 | 1 | 1 | 1 | 1 | |||||||||||||
| Total | 59 | 43 | 16 | 9 | 17 | 11 | 2 | 3 | 1 | 21 | 0 | 0 | 7 | 9 | 2 | 2 | 1 | |
* Parasite grading was done by observing giemsa stained slit skin smears as described in WHO (2010) and parasitological confirmation was done by PCR.
Median of all true positives = 2+, median of all RDT positives = 3+.
a ulcer = (nodular ulcerative +Dry ulcer+ wet ulcer grouped together).