Table 2. Prevalence of coronavirus RNA in long-legged bats (site #4) or big brown bats (sites #5, 17–21) in fecal and/or anal swab samples by site of collection and date.
| Collection Date | Number of Bats Sampled | Number of Bats Positive for CoV RNA | % Positive | p value* | |
| SITE #4 | |||||
| 2007 | 16 | 5 | 31 | ||
| 2008 | 34 | 2 | 6 | ||
| 2009 | 26 | 5 | 19 | ||
| TOTAL | 76 | 12 | 16 | 0.02 a | |
| SITE #5 | 2008 | 4 | 4 | 100 | |
| 2009 | 14 | 4 | 29 | ||
| TOTAL | 18 | 8 | 44 | 0.02 | |
| SITE #17 | |||||
| 06-14-2007 | 31 | 0 | 0 | ||
| 08-14-2007 | 12 | 1 | 8 | ||
| 2007 Total | 43 | 1 | 2 | ||
| 06-17-2008 | 23 | 2 | 9 | ||
| 07-08-2008 | 13 | 4 | 31 | ||
| 07-31-2008 | 44 | 9 | 20 | ||
| 2008 Total | 80 | 15 | 19 | ||
| Site Total | 123 | 16 | 13 | 0.01 | |
| SITE #18 | |||||
| 06-25-2008 | 26 | 3 | 12 | ||
| 07-07-2008 | 3 | 2 | 67 | ||
| 2008 Total | 29 | 5 | 17 | ||
| Site Total | 29 | 5 | 17 | ||
| SITE #19 | |||||
| 06-15-2007 | 40 | 3 | 8 | ||
| 08-22-2007 | 27 | 4 | 15 | ||
| 2007 Total | 67 | 7 | 10 | ||
| 06-06-2008 | 25 | 2 | 8 | ||
| 07-01-2008 | 31 | 2 | 6 | ||
| 2008 Total | 56 | 4 | 7 | ||
| Site Total | 123 | 11 | 9 | 0.75 | |
| SITE #20 | |||||
| 06-20-2007 | 12 | 1 | 8 | ||
| 2007 Total | 12 | 1 | 8 | ||
| 06-04-2008 | 13 | 2 | 17 | ||
| 06-23-2008 | 16 | 1 | 6 | ||
| 2008 Total | 29 | 3 | 10 | ||
| Site Total | 41 | 4 | 10 | 1.0 | |
| SITE #21 | |||||
| 06-19-2007 | 29 | 0 | 0 | ||
| 08-17-2007 | 22 | 0 | 0 | ||
| 2007 Total | 51 | 0 | 0 | ||
| 06-03-2008 | 39 | 2 | 5 | ||
| 06-26-2008 | 24 | 4 | 17 | ||
| 08-05-2008 | 35 | 4 | 11 | ||
| 2008 Total | 98 | 10 | 10 | ||
| Site Total | 149 | 10 | 7 | 0.02 | |
| SITES | |||||
| #17–21 | 2007 Total | 173 | 9 | 5 | |
| 2008 Total | 292 | 37 | 13 | ||
| Site Total | 465 | 49 | 10 | <0.01 |
*Fisher's exact test, comparisons between percent positive at indicated site between the two years sampled.
a
comparison between 2007 and 2008, other comparisons not significant.