Table 3.
Prevalence of exposure and infection with B. persica and clinical characteristics in dogs as determined by PCR followed by DNA sequencing and antibody detection by ELISA
| Variable | Number of dogs tested | PCR+ (%) | Seropositive (%)a | PCR+ or seropositive (%)b |
|---|---|---|---|---|
| Fever | ||||
| Yes | 9 | 0 (0) | 0 (0) | 0 (0) |
| No | 178 | 4 (2.2) | 19 (10.7) | 23 (12.9) |
| Total | 187 | 4 (2.1) | 19 (10.2) | 23 (12.3) |
| Statistical significance | χ2 = 0.220, df = 1, P = 0.639 | χ2 = 0.399, df = 1, P = 0.528 | ||
| Lethargy | ||||
|
Yes No Total |
16 126 142 |
1 (6.3) 4 (3.1) 5 (3.5) |
1 (6.3) 14 (1.1) 15 (10.6) |
1 (6.3) 18 (14.3) 19 (13.3) |
| Statistical significance | χ2 = 0.027, df = 1, P = 0.870 | χ2 = 0.250, df = 1, P = 0.617 | ||
| Bleeding | ||||
|
Yes No Total |
10 186 196 |
0 (0) 4 (2.15) 4 (2) |
1 (10) 19 (10.2) 20 (10.2) |
1 (10) 23 (12.3) 24 (10.2) |
| Statistical significance | χ2 = 0.0001, df = 1, P = 1 | χ2 = 0.0001, df = 1, P = 1 | ||
| Inappetence | ||||
|
Yes No Total |
22 173 195 |
1 (4.5) 3 (1.7) 4 (2) |
1 (4.5) 19 (11) 20 (10.3) |
2 (0.9) 22 (12.9) 24 (12.3) |
| Statistical significance | χ2 = 0.318, df = 1, P = 0.573 | χ2 = 0.020, df = 1, P = 0.886 | ||
| Icterus | ||||
|
Yes No Total |
3 186 189 |
0 (0) 4 (2.1) 4 (2.1) |
0 (0) 20 (10.7) 20 (10.6) |
0 (0) 24 (12.9) 24 (12.7) |
| Statistical significance | χ2 = 0.0001, df = 1, P = 1 | χ2 = 0.0001, df = 1, P = 1 | ||
| Anemia | ||||
|
Yes No Total |
10 185 195 |
0 (0) 3 (1.6) 3 (1.5) |
1 (10) 19 (10.3) 20 (10.3) |
1 (10) 22 (11.9) 23 (11.8) |
| Statistical significance | χ2 = 0.0001, df = 1, P = 1 | χ2 = 0.0001, df = 1, P = 1 | ||
| Thrombocytopenia | ||||
|
Yes No Total |
9 191 200 |
0 (0) 3 (1.5) 3 (1.5) |
4 (44.4) 16 (8.4) 20 (10) |
4 (44.4) 19 (9.9) 23 (11.5) |
| Statistical significance | *χ2 = 8.739, df = 1, P = 0.003 | *χ2 = 6.946, df = 1, P = 0.008 | ||
*Statistical significance association found between the variable above and a positive test result
aStatistical significance shown is based on serology results only
bStatistical significance shown is based on combined serology and PCR results