Table 1.
Water sample | No. of samples | No. of H. pylori-positive by culture* | No. of H. pylori-positive by PCR |
---|---|---|---|
Tap water | 50 | 2 (4.0%) | 5 (10.0%) |
Dental units' water | 35 | 2 (5.8%) | 4 (11.4%) |
Bottled mineral water | 20 | 0 | 0 |
Refrigerated water with filtration | 30 | 0 | 1 (3.3%) |
Tape water equipped with filtration system | 25 | 0 | 0 |
Water cooler in public places | 40 | 1 (2.5%) | 4 (10.0%) |
| |||
Total | 200 | 5 (2.5 %) | 14 (7.0%) |
*Results expressed as the number of H. pylori-positive samples (percent positive samples analyzed).