Table 4. Distribution of clinical signs associated with visceral leishmaniasis in dogs with quiescent (negative spleen culture) or active (positive spleen culture) infection by L. infantum and type 1 (normal) or type 3 (moderately to severely disorganized) splenic white pulp (WP).
NEGATIVE SPLEEN CULTURE | POSITIVE SPLEEN CULTURE | |||||||||||||
CLINICAL SIGNS | WP TYPE 1 | WP TYPE 3 | WP TYPE 1 | WP TYPE 3 | ||||||||||
N | (%) | N | (%) | OR | [95% CI] | N | (%) | OR | [95% CI] | N | (%) | OR | [95% CI] | |
Alopecia | 10/37 | (27) | 8/26 | (31) | 1.2 | [0.4–3.6] | 6/20 | (30) | 1.2 | [0.4–3.8] | 18/22 | (82) | 12.2 | [3.3–44.8]d |
Anemia | 9/23 | (39) | 10/19 | (53) | 1.7 | [0.5–5.9] | 2/12 | (17) | 0.3 | [0.0–1.7] | 14/19 | (74) | 4.4 | [1.2–16.3]a |
Conjunctivitis | 5/17 | (29) | 7/15 | (46) | 2.1 | [0.5–9.0] | 4/12 | (33) | 1.2 | [0.2–5.9] | 11/16 | (69) | 5.3 | [1.2–23.3]b |
Dehydration | 3/21 | (14) | 4/16 | (25) | 2.0 | [0.4–10.6] | 3/9 | (33) | 3.0 | [0.5–19.0] | 7/9 | (77) | 21.0 | [2.9–153.8]c |
Dermatitis | 3/16 | (19) | 5/10 | (50) | 4.3 | [0.7–25.3] | 4/11 | (36) | 2.5 | [0.4–14.4] | 8/13 | (62) | 6.9 | [1.3–37.2]a |
Emaciation | 8/37 | (22) | 8/26 | (31) | 1.6 | [0.5–5.0] | 12/20 | (60) | 5.4 | [1.6–17.9]b | 16/22 | (73) | 9.7 | [2.8–32.8]c |
Erosion | 5/21 | (24) | 4/16 | (25) | 1.1 | [0.2–4.8] | 4/9 | (44) | 2.6 | [0.5–13.4] | 6/9 | (67) | 6.4 | [1.2–35.4]a |
Lymphadenopathy | 18/35 | (51) | 20/26 | (77) | 3.2 | [1.0–9.7] | 7/20 | (35) | 0.5 | [0.2–1.6] | 16/22 | (72) | 2.5 | [0.8–8.0] |
Onychogryphosis | 6/37 | (16) | 4/25 | (16) | 1.0 | [0.2–3.9] | 2/20 | (10) | 0.6 | [0.1–3.2] | 12/22 | (54) | 6.2 | [1.8–20.8]b |
Pustule | 2/21 | (10) | 1/16 | (6) | 0.6 | [0.0–7.7] | 1/9 | (11) | 1.2 | [0.1–15.0] | 1/9 | (11) | 1.2 | [0.1–15.0] |
Splenomegaly | 13/24 | (54) | 10/17 | (59) | 1.2 | [0.3–4.2] | 8/11 | (73) | 2.3 | [0.5–10.6] | 7/11 | (64) | 1.5 | [0.3–6.4] |
Ulceration | 1/21 | (5) | 3/16 | (19) | 4.6 | [0.4–49.3] | 3/9 | (33) | 10.0 | [0.9–114.8] | 4/9 | (44) | 16.0 | [1.4–176.6]a |
OR = odds ratio; CI = confidence interval;
P<0.05;
P<0.01;
P<0.005;
P<0.001 (Chi-square test or Fisher’s exact probability test).