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Table 4 Effect of decontamination on culture results for different media

From: Factors associated with the isolation of Nontuberculous mycobacteria (NTM) from a large municipal water system in Brisbane, Australia

Media Decontamination Culture result n (%) Significance
   Negative Positive Positive + contaminants Overgrown  
MGIT Winter No 43 (21.9) 35 (17.9) 115 (58.7) 3 (1.5) p < 0.0001*
Yes 99 (50.8) 49 (25.1) 46 (23.6) 1 (0.5)
MGIT + PANTA Winter No 4 (0.7) 48 (24.7) 82 (42.3) 3 (1.5) p < 0.0001*
Yes 14 (2.5) 64 (32.8) 19 (9.7) 1 (0.5)
7H11 Summer No 4 (0.7) 234 (41.1) 145 (25.4) 187 (32.8) p < 0.0001
Yes 14 (2.5) 338 (59.3) 62 (10.9) 156 (27.4)
7H11 Winter No 46 (7.9) 313 (53.5) 115 (19.7) 111 (19)
Yes 161 (27.5) 335 (57.3) 20 (3.4) 69 (11.8)