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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)