From: Multiple antibiotic resistances among Shiga toxin producing Escherichia coli O157 in feces of dairy cattle farms in Eastern Cape of South Africa
Serogroup
stx1
stx2
Prevalence of Shiga toxin genes
O157 (N = 84)
+
-
37 (44Â %)
38 (45.3Â %)
9 (10.7Â %)