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Table 2 Effect of protocols on the recovery of M. ulcerans from BU samples, in-vitro

From: Evaluating decontamination protocols for the isolation of Mycobacterium ulcerans from swabs

Decontamination protocols No. of tubes with M. ulcerans growth per protocola Recovery rate (%) (p-value) No. of tubes with contaminationa Contamination rate (%) (p-value)
0.5% PI 0 0 (0.00) 0 0 (0.00)
1% PIb 0 0 (0.00) 0 0 (0.00)
1% CP/2% NaCl 33 47 (0.00) 15 21 (0.00)
2% CPC/4% NaCl 37 5 3(0.76) 10 14 (0.00)
5% Oxalic acid 31 44 (0.07) 20 29 (0.00)
10% Oxalic acid 10 14 (0.00) 12 17 (0.00)
0.5% Virkon 36 51 (0.40) 12 17 (0.00)
1% Virkon 6 0.1 (0.00) 7 10 (0.00)
  1. a n = total number of tests: 35 × 2 = 70,
  2. bConventional method, BU Buruli ulcer, PI Povidone iodine, CPC Cetyl pyridinium chloridem, NaCl Sodium chloride