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Report what happened to your cat

Owner and fosterer experience is the largest body of practical knowledge about this infection and almost none of it is published. This form turns it into something countable: how many cats, what test, which formulation, how many rounds, whether a negative was ever confirmed and how long after the last dose. Results are published in aggregate, never with anything that identifies you.

No identifying information collected Aggregates published, not raw rows Last verified 26 Oct 2026

Where this form lives The live case report form is hosted by Google Forms, so responses land in a spreadsheet and this site stores nothing. The questions below are shown read-only — there is nothing to type in, and nothing on this page can send anything. When you are ready to file a report, open the live form.

Open the live case report form ↗

This is a survey, not a clinical record and not a study. Nothing you submit changes anything about your cat's care, and submission is not a request for veterinary advice. Responses are self-reported and unverified. Read how we use this before you start.

Read-only preview. Every question the live form asks, in the order it asks them, with nothing to fill in — so nobody types a case into a page that cannot send it. When you are ready, answer them on the Google Form.

1 · The household This section is why the survey exists. Knowing how many cats were positive and how many were negative in the same house is the only way to measure whether presumed-clear cats are actually at risk.

How many cats live in your household?*

How many of them tested positive?*

How many were tested and came back negative? Leave blank if you do not know or nobody was tested.

How many had diarrhea at any point? Include cats that were never tested. Symptom-free carriers are the point.

2 · How it was diagnosed A "positive" means very different things depending on the test. This is not a trick question and it is not a criticism of your vet — it changes how the answer is read.

What test produced the positive result?*

PCR — a DNA test, often sent to a laboratory Culture — stool grown in a medium such as InPouch TF Direct smear — seen under a microscope in the clinic Diagnosed on signs alone — treated without a confirmed test Not sure

How was the sample taken? Loop and flush are different methods with different sensitivity. "Not sure" is a very common answer.

Fecal loop — a small loop used inside the rectum Colonic flush — saline washed into the colon Voided stool — collected from the litter tray Not sure

3 · Treatment

How many separate courses of treatment has the household done?* Count one course as one full run of medication, typically 14 days.

None — we have not treated One course Two courses Three courses Four or more

Which drug was used?

Ronidazole Tinidazole Metronidazole (flagyl) Something else Not sure

Where did the medication come from?* Answer with the category, not the shop name. We deliberately do not collect brand names — a self-selected survey cannot support a claim about a named company's product, and publishing one would be unfair as well as unreliable.

Prescribed by my vet, compounded into capsules Prescribed by my vet, as a liquid or suspension Prescribed by my vet, form unknown Bought online from a veterinary or pet-medication retailer Pigeon or bird formula (e.g. a 10% powder sold for birds) Imported from outside my country, or an unclear supplier Not sure

What dose schedule was used? This is the field that makes "it failed" interpretable. A course at a lower dose is not the same test of the drug.

30 mg/kg once daily, 14 days 30–50 mg/kg twice daily, 14 days A lower dose than the above Some other schedule Not sure

4 · Outcome and retesting

Did the diarrhea settle?

Yes, fully Partly No The cat never had diarrhea

Was the cat retested after the last dose?*

Yes No Not sure

What did the retest show?

Negative Still positive Not retested / not sure

How long after the last dose was that retest?* The most important timing field in the survey. Infection has been observed to relapse up to 20 weeks after treatment, so a retest before then cannot establish clearance.

Under 2 weeks 2 to 4 weeks 4 to 8 weeks 8 to 12 weeks 12 to 20 weeks More than 20 weeks Not retested

Did the signs come back later?

Yes No Not sure / too early to say

If signs came back, roughly how long after treatment ended?

Under 4 weeks 4 to 12 weeks 12 to 20 weeks More than 20 weeks Does not apply

Did any cat that had tested negative later become positive? This is the question the whole survey is built around. "Not sure" is an acceptable answer.

Yes No Not sure

5 · Consent Read this properly. It is short, and it is the only thing standing between a useful dataset and a problem.

Answer these on the live form ↗ Nothing on this page can be filled in. Your answers are collected by Google Forms.

How we use this

Answers are compiled into summary tables on the survey results page: household size and positives, test method, formulation category, dose schedule, rounds, whether a negative was confirmed, and how long after the last dose.

The one limitation that matters. This is a self-selected survey. People whose treatment failed are far more likely to find and complete it than people whose cat got better and moved on. That means the failure figures here will look worse than reality, and must never be quoted as the proportion of cats that relapse. They are the proportion of people who answered. The results page repeats this above every table, because a number without its denominator is how bad health information starts.