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Table 2 Seroprevalence of brucellosis among Debre Zeit and Modjo abattoirs workers by years on job, level of education, types of job and name of abattoir (N = 149)

From: Seroprevalence and risk factors of brucellosis in abattoir workers at Debre Zeit and Modjo export abattoir, Central Ethiopia

Category N RBPT positive
N (%)
CFT positive
no (%)
95% CI
for CFT
Fisher’s exact
P-value
Years on job
 <1 19 1 (5.26) -   
 1–5 82 3 (3.66) -   
 6–10 33 3 (9.09) 2 (6.06) 0.74–20.23 0.173
 11–15 11 - -   
 >15 4 - -   
Level of education
 Illiterate 13 1 (7.69) -   
 Primary 54 3 (5.56) 2 (3.70) 0.45–12.75 0.546
 Secondary 60 3 (5.00) -   
 Post secondary 22 - -   
Types of job
 Animal keepers 23 - -   
 Slaughterers 60 1 (1.67) -   
 Loaders 31 2 (6.45) 1 (3.23) 0.08–16.70 0.355
 Veterinarian 12 - -   
 Cleaners 23 4 (17.39) 1 (4.35) 0.11–21.95  
Name of abattoirs
 Abattoir 1 30 - -   
 Abattoir 2 27 1 (3.70) 1 (3.70) 0.09–18.97  
 Abattoir 3 30 1 (3.33) 1 (3.33) 0.08–17.21 0.342
 Abattoir 4 31 5 (16.13) -   
 Abattoir 5 31 - -