Table 1 Characteristics of pigs, proportion of MAT results, sero-prevalence and associated odds ratios by their demographic characteristics, (Antibody titre cut-off > 40), Busia County, Kenya 2018 (n = 252)
Variable | Variable categories | N (%) | MAT positive n (%) | MAT negative n (%) | Prevalence (95% CI) | Odds ratio (OR) 95% CI |
|---|---|---|---|---|---|---|
Sex of pig | Female | 140 (44.4) | 49 (35.0) | 91 (65.0) | 35.0 (27.1–43.5) | 1.2 (0.7–2.2) |
Male | 112 (55.6) | 34 (30.4) | 78 (69.6) | 30.3 (22.0–39.8) | Ref | |
Age category | Mature | 110 (43.7) | 45 (40.9) | 65 (59.1) | 40.9 (31.6–50.7) | 1.9 (1.1–3.3) |
Young | 142 (56.7) | 38 (26.8) | 104 (73.2) | 26.8 (19.7–34.8) | Ref | |
Breed | Exotic/Crosses | 28 (11.1) | 10 (35.7) | 18 (64.3) | 35.7 (18.6–55.9) | 1.2 (0.5–2.8) |
Indigenous | 224 (88.9) | 73 (32.6) | 151 (67.4) | 32.6 (26.6–39.2) | Ref | |
Body condition score | Poor/emaciated | 45 (17.9) | 20 (44.4) | 25 (55.6) | 44.4 (29.6–60.0) | 1.7 (0.8–3.4) |
Good/very good | 207 (8.2.5) | 63 (30.4) | 142 (69.6) | 30.4 (24.2–37.2) | Ref | |
Herd size at the farm of origin | 5+ pigs | 22 (8.7) | 11 (50.0) | 11 (50.0) | 50.0 (28.2–71.8) | 2.2 (0.8–5.9) |
< 5 pigs | 230 (91.3) | 72 (31.3) | 158 (68.7) | 31.3 (25.4–37.7) | Ref | |
Production system | Extensive | 220 (88.7) | 71 (32.3) | 149 (67.7) | 32.3 (26.2–38.9) | 0.8 (0.4–1.9) |
Intensive | 28 (11.3) | 12 (42.9) | 16 (57.1) | 42.9 (24.5–62.8) | Ref | |
Other types of livestock | Yes | 197 (79.8) | 72 (36.5) | 125 (63.5) | 36.5 (29.8–43.7) | 2.3 (1.0–4.5) |
No | 50 (20.2) | 10 (20.0) | 40 (80.0) | 20 (10.0–33.7) | Ref | |
Presence of kidney white spots | Yes | 21 (8.3) | 7 (33.3) | 14 (66.7) | 33.3 (14.6–57.0) | 1.0 (0.3–2.8) |
No | 231 (91.7) | 76 (32.9) | 155 (67.1) | 32.9 (26.9–39.4) | Ref | |
Sub county of origin | Butula | 59 (23.4) | 19 (32.2) | 40 (67.8) | 32.2 (20.6–45.6) | 1.2 (0.3–5.9) |
Funyula | 26 (10.3) | 7 (26.9) | 19 (73.1) | 26.9 (11.6–47.8) | 0.9 (0.2–5.3) | |
Matayos | 81 (32.1) | 27 (33.3) | 54 (66.7) | 33.3 (23.2–44.7) | 1.3 (0.3–6.0) | |
Nambale | 72 (28.6) | 26 (36.1) | 46 (63.9) | 36.1 (25.1–48.3) | 1.4 (0.4–6.8) | |
(Butere/Matungu/Teso south) | 14 (5.6) | 4 (28.6) | 10 (71.4) | 28.6 (8.3–58.1) | Ref | |
Slaughterhouse | ||||||
Butula | Bumala | 48 (19.1) | 16 (33.3) | 32 (66.7) | 33.3 (20.4–48.4) | 0.7 (0.4–1.6) |
Butula | 18 (7.1) | 3 (16.7) | 15 (83.3) | 16.7 (3.6–41.4) | ||
Funyula | Funyula | 24 (9.5) | 9 (37.5) | 15 (62.5) | 37.5 (18.8–59.4) | 1.1 (0.4–3.1) |
Matayos | Mundika | 74 (29.4) | 24 (32.4) | 50 (67.6) | 32.4 (22.0–44.3) | 0.9 (0.4–1.8) |
Nambale | Mungatsi | 14 (5.6) | 6 (42.9) | 8 (57.1) | 42.9 (17.7–71.1) | Ref |
Nambale | 59 (23.4) | 21 (35.6) | 38 (64.4) | 35.6 (23.6–49.1) | - | |
Tanga-kona | 15 (6.0) | 4 (26.7) | 11 (73.3) | 26.7 (7.8–55.1) | - | |