TABLE 2.
Treatment | No. (%) of positive samples |
||
---|---|---|---|
L. pneumophila serogroup 1 alone or with others | L. pneumophila serogroups 2–14 | Legionella spp. | |
Monochloramine | 7 (77.8) | 0 (0.0) | 2 (22.2) |
Chlorine dioxide | 51 (85.0) | 4 (6.7) | 5 (8.3) |
Hydrogen peroxide | 21 (26.3) | 5 (6.2) | 54 (67.5) |
Hyperthermia | 0 (0.0) | 36 (100.0) | 0 (0.0) |