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Table 2 Prevalence of Legionella spp. and Pseudomonas aeruginosa in samples from dental unit waters

From: Italian multicenter study on infection hazards during dental practice: Control of environmental microbial contamination in public dental surgeries

  Pseudomonas aeruginosa  
Legionella spp Negative n. (%) Positive n. (%) Total n. (%)
Negative 47 (54.0) 11 (12.7) 58 (66.7)
Positive 28 (32.2) 1 (1.1) 29 (33.3)
Total 75 (86.2) 12 (13.8) 87 (100.0)
  1. One-tailed Fisher's exact test p = 0.042