Hi there. I'm wondering how your dog was diagnosed? What led you to have it tested? I've been treating my 10 year old female for months and months now for an e-coli infection. You can see my post a few above yours, she has an ongoing infection around her vulva. Still ongoing. On another 14 day round of antibiotics, disinfectant and ointment to the area, but infection is still present. Like you, we've spent thousands in tests, meds, etc. .....