Consensus definitions aim to clarify infectious urinary disease: full analysis

Veterinary infectious disease experts have published a new consensus framework for describing infectious urinary tract disease in dogs and cats, aiming to replace inconsistent language that has long blurred the line between infection, bacteriuria, and other urinary conditions. The study, published online in 2026 in the Journal of Small Animal Practice, used a modified Delphi process and produced 29 agreed terms and definitions, along with one set of cut-off values. (researchprofiles.ku.dk)

The push for standardization reflects a familiar problem in small-animal practice: “UTI” is often used as a catch-all, even when patients differ substantially in clinical signs, culture status, anatomic site, recurrence pattern, or whether infection is actually present. In the study abstract, the authors said unclear or variable definitions have been common in urinary tract disease research in dogs and cats, creating confusion and making it harder to assess evidence or build guidelines. Weese echoed that point in his blog coverage, framing terminology as a practical clinical issue, not just an academic one. (researchprofiles.ku.dk)

That concern isn’t new. ISCAID’s urinary guidelines, updated in 2019, already warned against imprecise terminology and noted that labels such as “urinary tract infection” can be too broad, while terms used for culture-positive animals without lower urinary tract signs should be handled carefully. The broader antimicrobial stewardship literature has pushed the same message: establish a diagnosis before treating when possible, avoid empirical antibiotics when evidence for bacterial infection is weak, and recognize that many feline lower urinary tract cases are noninfectious. (sciencedirect.com)

The new paper’s methodology is also notable. According to the publication record, the Delphi process ran through four review rounds with two expert and stakeholder audiences, involving 19, 16, 90, and 52 participants, respectively. The result was consensus on a standardized vocabulary intended to support diagnosis, communication, surveillance, and clinical research. The article is listed as an advance online publication with DOI 10.1111/jsap.70127. (researchprofiles.ku.dk)

While the full term list was not available in the abstracted sources reviewed here, the likely clinical target is clear: reducing diagnostic drift. AAHA’s antimicrobial stewardship guidance notes that cystocentesis-collected urine can help distinguish true bacteriuria from contamination, but not infection from subclinical bacteriuria on its own. Merck also describes urine culture with susceptibility testing as the diagnostic gold standard for bacterial UTI in animals. In practice, a shared vocabulary could help clinicians, specialists, and diagnostic labs describe the same case in the same way, and avoid reflex antibiotic treatment based on ambiguous chart language. (aaha.org)

There was no broad industry reaction surfaced in the available search results, but the surrounding commentary from stewardship-focused sources points in the same direction. Weese’s recent Worms & Germs coverage of urinary topics, including cranberry evidence reviews and upcoming guideline revisions, suggests urinary disease terminology is being revisited as part of a larger effort to tighten evidence-based prescribing in dogs and cats. That makes this definitions paper look less like a standalone publication and more like infrastructure for future guidance. That last point is an inference based on the timing and overlap in authorship and topic area. (wormsandgermsblog.com)

Why it matters: For veterinary professionals, consensus definitions can improve case handoffs, medical record clarity, study comparability, and antimicrobial stewardship. They may be especially useful in feline medicine, where urinary signs are common but bacterial infection is not, and in recurrent or complicated canine cases, where poor terminology can obscure whether a patient has relapse, reinfection, subclinical bacteriuria, or a noninfectious problem. Better language won’t solve diagnostic uncertainty by itself, but it can make decisions about culture, treatment, and follow-up more consistent. (wormsandgermsblog.com)

What to watch: The next signal will be whether ISCAID incorporates this vocabulary into its next urinary guidance update, and whether journals, labs, and CE programs start adopting the definitions in routine use; Weese has already indicated urinary guidance work is active in 2026. (wormsandgermsblog.com)