Table 2. Antimicrobial resistance profiles of NAS strains isolated from poultry slaughterhouses

NAS (n=isolates) Number of antimicrobial resistance (%)
AMP FOX PEN CHL CIP CLI ERY FUS GEN MUP RIF SXT SYN TET MDR
CoVS (19)
Staphylococcus agnetis (17) 14 (83.3) 0 14 (83.3) 2 (16.7) 10 (61.1) 6 (38.9) 6 (38.9) 15 (88.2) 14 (77.8) 0 0 0 0 4 (27.8) 14 (82.4)
Staphylococcus chromogenes (2) 2 (100) 0 2 (100) 1 (50) 2 (100) 2 (100) 2 (100) 1 (50) 1 (50) 0 0 0 0 1 (50) 2 (100)
CoVS total 16 (84.2) 0 16 (84.2) 3 (15.8) 12 (63.2) 8 (42.1) 8 (42.1) 16 (84.2) 15 (78.9) 0 0 0 0 5 (26.3) 16 (84.2)
CoNS (81)
Staphylococcus arlettae (8) 8 (100) 0 8 (100) 7 (85.7) 7 (85.7) 6 (75) 8 (100) 8 (100) 0 0 0 0 0 3 (37.5) 8 (100)
Staphylococcus epidermidis (1) 1 (100) 1 (100) 1 (100) 0 0 0 1 (100) 1 (100) 0 0 0 0 0 0 1 (100)
Staphylococcus lentus (11) 6 (54.5) 4 (36.4) 6 (54.5) 7 (63.6) 7 (63.6) 7 (63.6) 7 (63.6) 8 (72.7) 0 0 0 5 (45.5) 0 2 (18.2) 10 (90.9)
Staphylococcus sciuri (4) 2 (50) 0 2 (50) 1 (25) 0 0 0 4 (100) 0 0 0 0 0 0 0
Staphylococcus simulans (49) 5 (10.2) 2 (4.1) 4 (8.2) 26 (53.1) 8 (16.3) 37 (75.5) 38 (77.6) 3 (6.1) 0 0 0 10 (20.4) 0 4 (8.2) 28 (57.1)
Staphylococcus urealyticus (1) 0 0 0 1 (100) 0 1 (100) 1 (100) 1 (100) 0 0 0 0 0 0 1 (100)
Staphylococcus warneri (3) 0 0 0 0 0 3 (100) 3 (100) 0 0 0 0 0 3 (100) 0 3 (100)
Staphylococcus xylosus (4) 3 (75) 0 4 (100) 0 0 0 0 4 (100) 0 0 0 0 0 0 0
CoNS total 25 (30.9) 7 (8.6) 25 (30.9) 42 (51.9) 23 (28.4) 54 (66.7) 58 (71.6) 29 (35.8) 0 0 0 15 (18.5) 3 (3.7) 9 (11.1) 51 (63)
Total (100) 41 (41) 7 (7) 41 (41) 45 (45) 35 (35) 62 (62) 66 (66) 45 (45) 15 (15) 0 0 15 (15) 3 (3) 14 (14) 67 (67)
NAS, non-aureus staphylococci; AMP, ampicillin; FOX, cefoxitin; PEN, penicillin; CHL, chloramphenicol; CIP, ciprofloxacin; CLI, clindamycin; ERY, erythromycin; FUS, fusidic acid; GEN, gentamycin; MUP, mupirocin; RIF, rifampin; SXT, trimethoprim-sulfamethoxazole; SYN, quinupristin- dalfopristin; TET, tetracycline; MDR, multi-drug resistance; CoVS, coagulase-variable staphylococci; CoNS, coagulase-negative staphylococci.