Research Article

Prevalence and Antimicrobial Susceptibility Profile of Salmonella from Poultry Farms and In-Contact Humans and Associated Risk Factors in Addis Ababa, Ethiopia

Table 1

Distribution of poultry farms involved in the current study across subcities and their characteristics.

Study variablesNo. (%) of farmsNo. (%) of samples
(n = 58)(n = 471)

Studied subcities
Arada9 (15.5)89 (18.9)
Kirkos5 (8.6)33 (7.0)
Yeka24 (41.4)197 (41.8)
Kolfe Keranio20 (34.5)152 (32.3)

Flock size of chickens
Large24 (41.4)299 (63.5)
Small34 (58.6)172 (36.5)

Age of chickens
<6 months28 (48.3)231 (49.0)
6–12 months26 (44.8)219 (46.5)
>12 months4 (6.9)21 (4.5)

Poultry farm’s waste disposal practices
On-farm waste disposal25 (43.1)257 (54.6)
Off-farm waste disposal33 (56.9)214 (45.4)

Source of birds
Received from different multiplication centers21 (36.2)180 (38.2)
Received from a single multiplication center37 (63.8)291 (61.8)

Use of disinfectants
No20 (34.5)171 (36.3)
Yes38 (65.5)300 (63.7)

Antimicrobial use history during the last 6 months
No38 (65.5)314 (66.7)
Yes20 (34.5)157 (33.3)

Type of commodity
Layers51 (87.9)431 (91.5)
Broilers7 (12.1)40 (8.5)

Type of chicken-keeping house
Floor system26 (44.8)232 (49.3)
Cage system32 (55.2)239 (50.7)

Is poultry feed contaminated with chicken excreta?
No46 (79.3)354 (75.2)
Yes12 (20.7)117 (24.8)