Table 1.
Frequency and risk of being diagnosed with leprosy in relation to having received SDR-PEP and physical distance (in meters) to the nearest index case in four villages of Anjouan (Comoros)
| Factor | Population (n = 5760) | (%) | No. of leprosy cases (n = 153) | (%) | IRR | (95% CI) |
|---|---|---|---|---|---|---|
| SDR-PEP provided | ||||||
| - Yes | 259 | (4.5) | 7 | (2.7) | 0.6 | (0.3–1.2) |
| - No | 5501 | (95.5) | 146 | (2.7) | Ref. | |
| Distance to index case | ||||||
| - Same household | 672 | (11.7) | 27 | (4.0) | 2.4 | (1.5–3.6) |
| - 1-25 m | 1373 | (23.8) | 49 | (3.6) | 1.8 | (1.3–2.5) |
| - 26- 50 m | 1604 | (27.9) | 36 | (2.2) | 1.2 | (0.8–1.7) |
| - 51- 75 m | 654 | (11.3) | 16 | (2.4) | 1.3 | (0.8–2.1) |
| - > 75 m | 1457 | (25.3) | 25 | (1.7) | Ref. | |
SDR-PEP = Single Dose Rifampicin – Post Exposure Prophylaxis, Ref. = reference category