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Update data/rag/knowledge_base/Aeromonas/hydrophila.json

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data/rag/knowledge_base/Aeromonas/hydrophila.json CHANGED
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  {
 
 
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  "genus": "Aeromonas",
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  "species": "hydrophila",
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- "full_name": "Aeromonas hydrophila",
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- "clinical_significance": "A major human pathogen causing necrotizing soft tissue infections, gastroenteritis, septicemia, and severe infections following aquatic exposure. Known for potent hemolysins and cytotoxins.",
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- "phenotype_profile": {
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- "morphology": "Gram-negative motile rods.",
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- "culture": "Strongly β-hemolytic colonies on blood agar; non-lactose fermenting on MacConkey.",
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- "biochemical": [
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- "Oxidase positive",
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- "Indole positive",
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- "ONPG negative",
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- "Does not require NaCl",
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- "Ferments glucose with gas",
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- "Lysine decarboxylase negative or weak",
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- "Arginine dihydrolase variable",
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- "Strong β-hemolysis (key trait)"
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- ]
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  },
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- "differentiation": {
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- "from_close_species": [
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- "More strongly hemolytic than A. caviae and many A. veronii strains.",
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- "Indole positive (helps separate from A. caviae).",
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- "Gas production from glucose distinguishes it from many other Aeromonas species.",
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- "More strongly associated with necrotizing infections."
 
 
 
 
 
 
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  ],
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- "from_other_genera": [
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- "Oxidase positivity rules out Enterobacterales.",
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- "No salt requirement rules out Vibrio.",
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- "Hemolysis differentiates from Plesiomonas."
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- ]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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  },
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- "virulence_factors": [
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- "Hemolysins (aerolysin, cytotoxic enterotoxin)",
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- "Actin-destabilizing toxins",
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- "Biofilm formation",
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- "Type III secretion system in some strains"
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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  ],
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- "confirmation_methods": [
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- "MALDI-TOF MS",
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- "Strong β-hemolysis",
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- "Indole positivity",
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- "Glucose fermentation with gas",
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- "16S rRNA sequencing"
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  ],
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- "treatment_notes": "Often resistant to ampicillin and first-generation cephalosporins. Fluoroquinolones, TMP-SMX, and advanced cephalosporins often effective.",
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- "notes": "Historically considered the most virulent Aeromonas species; common in warm freshwater environments.",
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- "references": [
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- "Manual of Clinical Microbiology",
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- "Studies on Aeromonas soft tissue infections"
 
 
 
 
 
 
 
 
 
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  ]
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- }
 
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  {
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+ "schema_version": "1.0",
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+ "level": "species",
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  "genus": "Aeromonas",
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  "species": "hydrophila",
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+
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+ "overview": {
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+ "short": "Aeromonas hydrophila is a Gram-negative, oxidase-positive, facultatively anaerobic rod frequently associated with wound infections and gastroenteritis, and can cause invasive disease.",
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+ "clinical_context": "Often linked to water-exposure wound infections, diarrheal disease, and opportunistic septicemia."
 
 
 
 
 
 
 
 
 
 
 
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  },
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+
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+ "expected_fields": {
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+ "Gram Stain": "Negative",
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+ "Shape": "Rods",
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+ "Motility": "Positive",
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+ "Capsule": "Variable",
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+ "Spore Formation": "Negative",
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+ "Haemolysis": "Positive",
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+ "Haemolysis Type": "Beta",
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+ "Media Grown On": [
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+ "Blood Agar",
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+ "MacConkey Agar"
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  ],
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+ "Colony Morphology": [
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+ "Large",
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+ "Grey",
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+ "Opaque"
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+ ],
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+ "Oxygen Requirement": "Facultative Anaerobe",
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+ "Growth Temperature": "4//42",
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+ "Catalase": "Positive",
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+ "Oxidase": "Positive",
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+ "Indole": "Variable",
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+ "Urease": "Negative",
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+ "Citrate": "Variable",
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+ "Methyl Red": "Positive",
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+ "VP": "Negative",
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+ "H2S": "Negative",
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+ "DNase": "Positive",
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+ "ONPG": "Positive",
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+ "Coagulase": "Negative",
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+ "Gelatin Hydrolysis": "Positive",
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+ "Esculin Hydrolysis": "Variable",
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+ "Nitrate Reduction": "Positive",
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+ "NaCl Tolerant (>=6%)": "Negative",
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+ "Lipase Test": "Positive",
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+ "Lysine Decarboxylase": "Positive",
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+ "Ornithine Decarboxylase": "Negative",
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+ "Ornitihine Decarboxylase": "Negative",
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+ "Arginine dihydrolase": "Positive",
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+ "Glucose Fermentation": "Positive",
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+ "Lactose Fermentation": "Negative",
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+ "Sucrose Fermentation": "Variable",
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+ "Maltose Fermentation": "Positive",
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+ "Mannitol Fermentation": "Positive",
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+ "Sorbitol Fermentation": "Negative",
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+ "Xylose Fermentation": "Negative",
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+ "Rhamnose Fermentation": "Negative",
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+ "Arabinose Fermentation": "Negative",
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+ "Raffinose Fermentation": "Negative",
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+ "Trehalose Fermentation": "Variable",
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+ "Inositol Fermentation": "Negative",
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+ "Gas Production": "Variable",
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+ "TSI Pattern": "A/A",
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+ "Colony Pattern": "Unknown",
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+ "Pigment": "None",
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+ "Motility Type": "Polar"
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  },
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+
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+ "species_markers": [
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+ {
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+ "field": "Haemolysis Type",
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+ "value": "Beta",
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+ "importance": "high",
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+ "notes": "Beta haemolysis is more supportive of A. hydrophila compared with A. caviae (often non-haemolytic)."
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+ },
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+ {
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+ "field": "Gelatin Hydrolysis",
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+ "value": "Positive",
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+ "importance": "high",
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+ "notes": "Gelatinase positivity is commonly used in Aeromonas differentiation and supports A. hydrophila."
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+ },
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+ {
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+ "field": "Ornithine Decarboxylase",
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+ "value": "Negative",
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+ "importance": "medium",
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+ "notes": "Helps separate from A. caviae, which is more often ornithine positive."
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+ }
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+ ],
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+
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+ "common_confusions": [
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+ {
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+ "species": "Aeromonas veronii",
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+ "reason": "Overlap in oxidase-positive fermentation pattern; indole and haemolysis patterns are helpful."
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+ },
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+ {
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+ "species": "Aeromonas caviae",
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+ "reason": "Both can present in gastroenteritis; ornithine and haemolysis help distinguish."
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+ }
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  ],
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+
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+ "when_to_question_identification": [
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+ "Consistent non-haemolysis suggests A. caviae or another Aeromonas species.",
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+ "Strong indole positivity suggests A. veronii or related taxa.",
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+ "NaCl tolerance at >=6% suggests Vibrio rather than Aeromonas."
 
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  ],
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+
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+ "recommended_next_tests": [
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+ {
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+ "test": "Haemolysis on Blood Agar",
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+ "reason": "Supports species-level discrimination inside Aeromonas."
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+ },
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+ {
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+ "test": "Gelatin hydrolysis",
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+ "reason": "Commonly positive and useful for A. hydrophila support."
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+ },
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+ {
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+ "test": "MALDI-TOF MS",
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+ "reason": "Recommended for accurate differentiation among Aeromonas species."
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+ }
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  ]
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+ }