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Table 3 Prevalence of pathogenic subtypes and related virulence factors in Escherichia coli strains isolated from raw milk and traditional dairy product samples

From: Prevalence, identification of virulence factors, O-serogroups and antibiotic resistance properties of Shiga-toxin producing Escherichia coli strains isolated from raw milk and traditional dairy products

Samples (No. positive) Subtypes No. positive samples Virulence genes
Raw bovine milk (30) Non detected 7 (43.75)
EHEC 4 (25) stx1, eae, ehly: 4 (100)
AEEC 5 (31.25) stx1: 5 (100) stx2: 3 (60) eaeA: 5 (100) stx1, eaeA: 3 (60) stx2, eaeA: 2 (40) stx1, stx2, eaeA: 1 (20)
Total 16 (53.33)
Raw ovine milk (21) Non detected 4 (44.44)
EHEC 2 (22.22) stx1, eae, ehly: 2 (100)
AEEC 3 (33.33) stx1: 3 (100) stx2: 1 (33.33) eaeA: 3 (100) stx1, eaeA: 1 (33.33) stx2, eaeA: 1 (33.33) stx1, stx2, eaeA: 1 (33.33)
Total 9 (42.85)
Raw caprine milk (23) Non detected 4 (36.36)
EHEC 3 (27.27) stx1, eae, ehly: 2 (100)
AEEC 4 (36.36) stx1: 4 (100) stx2: 2 (50) eaeA: 4 (100) stx1, eaeA: 2 (50) stx2, eaeA: 1 (25) stx1, stx2, eaeA: 1 (25)
Total 11 (47.82)
Raw buffalo milk (20) Non detected 4 (28.57)
EHEC 5 (35.71) stx1, eae, ehly: 5 (100)
AEEC 5 (35.71) stx1: 5 (100) stx2: 3 (60) eaeA: 5 (100) stx1, eaeA: 3 (60) stx2, eaeA: 1 (20) stx1, stx2, eaeA: 1 (20)
Total 14 (70)
Raw camel milk (2) Non detected 1 (100)
EHEC
AEEC stx1: stx2: - eaeA: stx1, eaeA: stx2, eaeA: - stx1, stx2, eaeA: -
Total 1 (50)
Cheese (40) Non detected 8 (32)
EHEC 8 (32) stx1, eae, ehly: 8 (100)
AEEC 9 (36) stx1: 9 (100) stx2: 5 (55.55) eaeA: 8 (88.88) stx1, eaeA: 5 (66.66) stx2, eaeA: 2 (22.22) stx1, stx2, eaeA: 2 (22.22)
Total 25 (62.50)
Yoghurt (5) Non detected 1 (33.33)
EHEC 1 (33.33) stx1, eae, ehly: 1 (100)
AEEC 1 (33.33) stx1: 1 (100) stx2: 1 (100) eaeA: 1 (100) stx1, eaeA: 1 (100) stx2, eaeA: 1 (100) stx1, stx2, eaeA: 1 (100)
Total 3 (60)
Butter (10) Non detected 2 (33.33)
EHEC 1 (16.66) stx1, eae, ehly: 1 (100)
AEEC 3 (50) stx1: 3 (100) stx2: 1 (33.33) eaeA: 3 (100) stx1, eaeA: 1 (33.33) stx2, eaeA: 1 (33.33) stx1, stx2, eaeA: 1 (33.33)
Total 6 (60)
Cream (15) Non detected 2 (25)
EHEC 2 (25) stx1, eae, ehly: 2 (100)
AEEC 4 (50) stx1: 4 (100) stx2: 2 (50) eaeA: 3 (75) stx1, eaeA: 2 (50) stx2, eaeA: 1 (25) stx1, stx2, eaeA: 1 (25)
Total 8 (53.33)
Ice-cream (15) Non detected 2 (22.22)
EHEC 2 (22.22) stx1, eae, ehly: 2 (100)
AEEC 5 (55.55) stx1: 5 (100) stx2: 3 (60) eaeA: 5 (100) stx1, eaeA: 2 (40) stx2, eaeA: 2 (40) stx1, stx2, eaeA: 1 (20)
Total 9 (60)