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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

From: Infection and seroprevalence of Borrelia persica in domestic cats and dogs in Israel

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
  1. *Statistical significance association found between the variable above and a positive test result
  2. aStatistical significance shown is based on serology results only
  3. bStatistical significance shown is based on combined serology and PCR results