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Table 3 Resistance profiles of Listeria spp. isolated from raw fish and environmental samples

From: Prevalence, antimicrobial susceptibility and virulotyping of Listeria species and Listeria monocytogenes isolated from open-air fish markets

  Listeria spp. (n = 133) L. monocytogenes (n = 43) L. innocua (n = 47) L. seeligeri (n = 24) L. ivanovii (n = 19)
Ampicillin 16 (12 %) 9 (20.9 %) 5 (10.6 %) 2 (8.3 %) 0
Chloramphenicol 2 (1.5 %) 1 (2.3 %) 1 (2.1 %) 0 0
Cefotaxime 0 0 0 0 0
Ceftazidime 11 (8.3 %) 6 (14 %) 4 (8.5 %) 0 1 (5.3 %)
Cefuroxime 1 (1.2 %) 0 1 (3.6 %) 0 0
Cephalothin 22 (16.5 %) 7 (16.3 %) 11 (23.4 %) 3 (12.5 %) 1 (5.3 %)
Erythromycin 19 (14.3 %) 6 (14 %) 9 (19.1 %) 3 (12.5 %) 1 (5.3 %)
Florfenicol 20 (15 %) 6 (14 %) 11 (23.4 %) 2 (8.3 %) 1 (5.3 %)
Gentamycin 0 0 0 0 0
Kanamycin 0 0 0 0 0
Pefloxacin 0 0 0 0 0
Penicillin G 22 (16.5 %) 7 (16.3 %) 9 (19.1 %) 2 (8.3 %) 4 (21.1 %)
Rifampicin 5 (3.8 %) 1 (2.3 %) 2 (4.3 %) 2 (8.3 %) 0
Streptomycin 21 (15.8 %) 7 (16.3 %) 8 (17 %) 3 (12.5 %) 3 (15.8 %)
Tetracycline 31 (23.3 %) 12 (27.9 %) 11 (23.4 %) 5 (20.8 %) 3 (15.8 %)
Trimethoprim-sulfamethoxazole 14 (10.5 %) 5 (11.6 %) 5 (10.6 %) 3 (12.5 %) 1 (5.3 %)
Vancomycin 8 (6 %) 3 (7 %) 4 (8.5 %) 1 (4.2 %) 0
Resistant to 1 antibiotic 53 (39.8 %) 15 (34.9 %) 14 (29.8 %) 10 (41.7 %) 14 (73.7 %)
Resistant to 2 antibiotics 57 (42.9 %) 20 (46.5 %) 27 (57.4 %) 8 (33.3 %) 2 (10.5 %)
Resistant to > 2 antibiotics 9 (6.8 %) 6 (14 %) 3 (6.4 %) 0 0