Volume 23, Number 7—July 2017
CME ACTIVITY - Research
Risk Factors for Legionella longbeachae Legionnaires’ Disease, New Zealand
Emma Kenagy1, Patricia C. Priest1
, Claire M. Cameron, Debbie Smith, Pippa Scott, Vicki Cho, Peter Mitchell, and David R. Murdoch
, Claire M. Cameron, Debbie Smith, Pippa Scott, Vicki Cho, Peter Mitchell, and David R. Murdoch
Table 3
Univariate analyses of the associations between garden type, garden exposures, or pets and Legionella longbeachae Legionnaires’ disease, New Zealand, October 1–March 31, 2013–2014 and 2014–2015*
| Environmental factors | Case-patients, no. (%) | Controls, no. (%) | OR (95% CI) |
|---|---|---|---|
| Garden type | |||
| Outdoor garden on property | 31 (100) | 168 (98) | |
| Enclosed garden on property† | 11 (36) | 29 (17) | 3.0 (1.3–7.1) |
| Hanging pots or baskets on property |
10 (32) |
53 (31) |
0.95 (0.41–2.2) |
| Garden exposures | |||
| Near dripping, hanging pots or baskets | 4 (13) | 37 (22) | 0.55 (0.18–1.7) |
| Gardened in the past 3 weeks | 29 (94) | 151 (88) | 1.9 (0.42–8.7) |
| Spent any time gardening outdoors | 28 (90) | 150 (87) | 1.3 (0.36–4.7) |
| Spent any time gardening indoors‡ | 10 (32) | 54 (31) | 1.0 (0.45–2.4) |
| Used purchased compost | 26 (84) | 84 (49) | 6.2 (2.2–17.3) |
| Used homemade compost§ |
7 (23) |
40 (22) |
1.0 (0.40–2.6) |
| Pets | |||
| Own dog(s) | 7 (23) | 40 (23) | 0.97 (0.36–2.6) |
| Own cat(s) | 19 (61) | 63 (37) | 3.0 (1.3–6.8) |
| Own bird(s) | 4 (13) | 12 (7) | 1.9 (0.55–6.5) |
*OR, odds ratio.
†Glasshouse, tunnel house, hydroponics, or conservatory.
‡Including tending to potted plants.
§Irrespective of use of purchased compost.
1These authors contributed equally to this article.
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