Volume 10, Number 3—March 2004
Research
Legionella Infection Risk from Domestic Hot Water
Paola Borella*
, M. Teresa Montagna†, Vincenzo Romano-Spica‡§, Serena Stampi¶, Giovanna Stancanelli#, Maria Triassi**, Rachele Neglia*, Isabella Marchesi*, Guglielmina Fantuzzi*, Daniela Tatò†, Christian Napoli†, Gianluigi Quaranta‡, Patrizia Laurenti‡, Erica Leoni¶, Giovanna De Luca§, Cristina Ossi#, Matteo Moro#, and Gabriella Ribera D’Alcalà**
, M. Teresa Montagna†, Vincenzo Romano-Spica‡§, Serena Stampi¶, Giovanna Stancanelli#, Maria Triassi**, Rachele Neglia*, Isabella Marchesi*, Guglielmina Fantuzzi*, Daniela Tatò†, Christian Napoli†, Gianluigi Quaranta‡, Patrizia Laurenti‡, Erica Leoni¶, Giovanna De Luca§, Cristina Ossi#, Matteo Moro#, and Gabriella Ribera D’Alcalà**Table 6
Multiple logistic regression of system and water characteristics associated with Legionella contaminationa
| Variable | Legionella spp. yes/no |
|---|---|
| OR (95% CI) |
|
| Central heater |
4.88 (1.61 to 14.76)b |
| Distribution site distance >10 m |
4.55 (1.55 to 13.33)c |
| Zn <100 μg/L |
0.22 (0.07 to 0.66)c |
| Heating system age >10 yr |
3.68 (1.25 to 10.82)d |
| Cu >50 μg/L | 0.08 (0.01 to 0.97)d |
aOR, odds ratio; CI, confidence interval.
bp < 0.005.
cp < 0.01.
dp < 0.05.
