Research Article
Brucellosis in Camels and Humans: Seroprevalence and Associated Risk Factors in Amibara District of Afar Region, Ethiopia
Table 2
Summary of Brucella seropositivity in camels and association of potential risk factors.
| Variables | Number tested | Seropositive | Prevalence (%) | χ2 | value |
| Sex | | | | 0.309a | 1 | Male | 9 | 0 | 0 | | | Female | 241 | 8 | 3.43 | | |
| Age | | | | 10.7b | ≤0.004 | Young | 34 | 0 | 0 | | | Adult | 165 | 2 | 1.21 | | | Old | 51 | 6 | 11.764 | | |
| Body condition | | | | 10.26b | ≤0.003 | Poor | 53 | 6 | 11.3 | | | Medium | 158 | 2 | 1.266 | | | Good | 39 | 0 | 0 | | |
| Herd size | | | | 0.926b | 0.6357 | <20 | 42 | 2 | 4.76 | | | 20–50 | 92 | 2 | 2.17 | | | >50 | 116 | 4 | 3.45 | | |
| Number of parity | | | | 11.2b | ≤0.001 | Null | 32 | 0 | 0 | | | Less than or = 3 | 160 | 2 | 1.25 | | | Greater than 3 | 49 | 6 | 12.24 | | |
| Abortion history | | | | 29.96a | ≤0.005 | Aborted | 37 | 7 | 18.92 | | | No abortion | 213 | 1 | 0.47 | | |
| Placental retention | | | | 0.134b | 1 | Yes | 4 | 0 | 0 | | | No | 229 | 8 | 3.5 | | |
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bFisher’s exact test value; a chi-square value; significant; only female animals considered. |