TABLE 2.
Prevalence of L. monocytogenes by seasona and year in Moore swab samples
| Yr | Prevalence, % (no. of sampling trips)a |
||||
|---|---|---|---|---|---|
| Fall | Winter | Spring | Summer | All | |
| 2011 | 16.7 (1) | 22.5 ± 11.7 (2) | ND | ND | 20.8 ± 7.7 (3) |
| 2012 | 26.4 ± 15.8 (6) | 39.0 ± 15.3 (6) | 60.8 ± 20.0 (8) | 36.5 ± 13.6 (7) | 45.2 ± 20.5 (27) |
| 2013 | 27.2 ± 18.0 (5) | 62.9 ± 10.2 (7) | 47.2 ± 10.8 (7) | 27.8 ± 9.7 (6) | 40.4 ± 17.5 (26) |
| 2014 | 26.8 ± 18.3 (7) | 36.3 ± 18.8 (7) | 42.3 ± 12.2 (7) | 22.1 ± 10.2 (6) | 37.7 ± 22.5 (28) |
| 2015 | 36.4 ± 18.7 (6) | 63.0 ± 20.9 (8) | 47.5 ± 17.9 (6) | 24.6 ± 13.8 (7) | 41.0 ± 20.2 (26) |
| 2016 | 17.5 ± 3.5 (2) | 64.5 ± 12.9 (8) | 49.3 ± 22.1 (6) | 31.3 ± 11.6 (8) | 43.7 ± 21.8 (21) |
| All | 27.5 ± 16.7 | 53.7 ± 20.8 | 51.2 ± 18.9 | 29.8 ± 13.8 | |
a
Fall, September through November; winter, December through February; spring, March through May; summer, June through August. Prevalence represents the percentage of total samples positive in the given time period. Values in parentheses are the number of sampling trips for that time period. ND, not done (no sampling occurred at these times).