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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)

From: Clustering of leprosy beyond the household level in a highly endemic setting on the Comoros, an observational study

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.  
  1. SDR-PEP = Single Dose Rifampicin – Post Exposure Prophylaxis, Ref. = reference category