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Table 2 Antimicrobial susceptibility profile of S. aureus isolates according to the types of samples

From: Assessment of Staphylococcus aureus along milk value chain and its public health importance in Sebeta, central Oromia, Ethiopia

Antimicrobial Unit Type of samples susceptible to different antimicrobial agents
Farm milk (n = 41)
No (%)
Milker’s Hand swabs (n = 8)
No (%)
Milking bucket swab (n = 3)
No (%)
MCCs (n = 16)
No (%)
R I S R I S R I S R I S
Ciprofloxacin 5 μg 3 (7.3) 5 (12.2) 33 (80.5) 4 (50) 0 (0.0) 4 (50) 0 (0.0) 0 (0.0) 3 (100) 0 (0.0) 0 (0.0) 16 (100)
Nalidixic acid 30 μg 8 (19.5) 23 (56.1) 10 (24.4) 2 (25) 0 (0.0) 6 (75) 0 (0.0) 2 (66.7) 1 (33.3) 2 (12.5) 2 (12.5) 12 (75)
Vancomycin 30 μg 26 (63.4) 0 (0.0) 15 (36.6) 4 (50) 0 (0.0) 4 (50) 2 (66.7) 0 (0.0) 1 (33.3) 12 (75) 0 (0.0) 4 (25)
Penicillin G 10 units 41 (100) 0 (0.0) 0 (0.0) 8 (100) 0 (0.0) 0 (0.0) 2 (66.7) 0 (0.0) 1 (33.3) 16 (100) 0 (0.0) 0 (0.0)
Amoxicillin 30 μg 25 (60.9) 8 (19.5) 8 (19.5) 8 (100) 0 (0.0) 0 (0.0) 2 (66.7) 1 (33.3) 0 (0.0) 12 (75) 2 (12.5) 2 (12.5)
Cefoxitin 30 μg 41 (100) 0 (0.0) 0 (0.0) 8 (100) 0 (0.0) 0 (0.0) 3 (100) 0 (0.0) 0 (0.0) 16 (100) 0 (0.0) 0 (0.0)
Streptomycin 10 μg 36 (87.8) 0 (0.0) 5 (12.2) 4 (50) 4 (50) 0 (0.0) 3 (100) 0 (0.0) 0 (0.0) 10 (62.5) 0 (0.0) 6 (37.5)
Erythromycin 15 μg 28 (68.3) 5 (12.2) 8 (19.5) 4 (50) 0 (0.0) 4 (50) 3 (100) 0 (0.0) 0 (0.0) 12 (75) 2 (12.5) 2 (12.5)
SXT 25 μg 15 (36.6) 0 (0.0) 26 (63.4) 4 (50) 0 (0.0) 4 (50) 1 (33.3) 0 (0.0) 2 (66.7) 2 (12.5) 0 (0.0) 14 (12.5)
Tetracycline 30 μg 28 (68.3) 0 (0.0) 13 (31.7) 8 (100) 0 (0.0) 0 (0.0) 2 (66.7) 0 (0.0) 1 (33.3) 6 (37.5) 0 (0.0) 10 (62.5)
  1. Key: I Intermediate, MCCs Milk collection centers, n number of S. aureus isolated, No number of S. aureus showing resistance, intermediate or susceptible to antimicrobials tested, R Resistant, S Susceptible, SXT Sulphamethoxazole-Trimethoprim