diff --git a/src/utils/clinicalPromptPool.js b/src/utils/clinicalPromptPool.js
index 6a324d2e..5d4c29ab 100644
--- a/src/utils/clinicalPromptPool.js
+++ b/src/utils/clinicalPromptPool.js
@@ -355,12 +355,21 @@ function createClinicalPromptPool(opts) {
         var sourceText = batchSnippets.map(function(s, idx) {
           return '[' + (idx + 1) + '] ' + s.title + (s.page ? ', page ' + s.page : '') + '\n' + clip(s.excerpt, 700);
         }).join('\n\n');
+        // Every batch after the first names what the category already holds.
+        // Batches three onwards reuse the first batches' snippets (there are
+        // 36 for 18 a batch), and an identical request came back with the
+        // identical list — every category stopped at exactly 40 — so the list
+        // of what is covered is what makes each request, and each answer, new.
+        var covered = categoryExamples.map(function(ex) { return ex.label; }).filter(Boolean);
+        var coveredNote = covered.length
+          ? '\n\nAlready covered for this category — ask about something else: ' + covered.join('; ') + '.'
+          : '';
         var ai = await opts.callAI([
           {
             role: 'system',
             content: 'Write starter questions for a pediatric clinical assistant. They are what a resident or a paediatrician would ask to learn something concrete about children — not a case, not a scenario, not a vignette. Use only the provided titles/snippets as inspiration; do not answer the questions and do not mention source names. Each question asks one definite thing with a definite answer: a mechanism (why a disease produces a finding, how a drug or a test works, what goes wrong in the physiology), a distinction (what separates two conditions that look alike, and why), a threshold or a number that matters in children (a dose, a cut-off, an age at which something changes), or the reason behind a rule of practice. Prefer pathophysiology wherever the source supports it. Name the disease, drug, organism, test or finding in the question itself, and keep it paediatric: an age group, a childhood disease, or a paediatric dose or value. Never open with a patient ("A 6-week-old with…", "A child presents…"), never invent findings, never ask "What is X?" alone. 10 to 30 words. Return strict JSON only: {"questions":[{"label":"2-5 word label","prompt":"question ending with ?","category":"' + item.category + '","age_band":"' + item.ageBands.join('|') + '","intent":"diagnosis|management|red_flags|differential|counseling|dosing|admission|discharge|review"}]}.'
           },
-          { role: 'user', content: 'Category: ' + item.category + '\nAge bands: ' + item.ageBands.join(', ') + '\nIndexed pediatric source snippets:\n\n' + sourceText + '\n\nCreate 20 starter questions for this category, each a concrete thing to learn, mechanism first. Vary what is asked (why a finding happens, how a treatment works, what distinguishes two conditions, which number decides, why a rule exists) and the age group. Examples of the kind wanted: "Why does pyloric stenosis produce a hypochloraemic metabolic alkalosis, and why is the urine paradoxically acidic?", "How does a ductal-dependent lesion stay hidden until the duct closes, and what does prostaglandin E1 do?", "Why are infants under 3 months given broader empiric cover for fever than older children?" No scenarios.' }
+          { role: 'user', content: 'Category: ' + item.category + '\nAge bands: ' + item.ageBands.join(', ') + '\nIndexed pediatric source snippets:\n\n' + sourceText + '\n\nCreate 20 starter questions for this category, each a concrete thing to learn, mechanism first. Vary what is asked (why a finding happens, how a treatment works, what distinguishes two conditions, which number decides, why a rule exists) and the age group. Examples of the kind wanted: "Why does pyloric stenosis produce a hypochloraemic metabolic alkalosis, and why is the urine paradoxically acidic?", "How does a ductal-dependent lesion stay hidden until the duct closes, and what does prostaglandin E1 do?", "Why are infants under 3 months given broader empiric cover for fever than older children?" No scenarios.' + coveredNote }
         ], {
           model: chatModel || undefined,
           // The pool is a list, not a reasoning task: DeepSeek writes it