“…Of the group of mares sampled, all presented between two and four different bacterial isolates, information which is consistent with previous articles [ 4 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 52 , 53 ]. According to these results, the Enterobacterales group was the most predominant, with Escherichia coli being the most frequent bacterium [ 17 , 54 , 55 , 56 ]. Some studies indicate that the source of origin of this agent would be fecal matter that contaminates the vulva and perineum, associated with a bad anatomical conformation [ 12 , 13 , 15 ].…”