data/rag/knowledge_base/Enterobacter/cloacae.json

{
  "schema_version": "1.0",
  "level": "species",
  "genus": "Enterobacter",
  "species": "cloacae",

  "overview": {
    "short": "Enterobacter cloacae is a Gram-negative, facultatively anaerobic rod commonly associated with opportunistic and nosocomial infections.",
    "clinical_context": "Frequently isolated from urinary tract, respiratory, and bloodstream infections, particularly in hospital settings."
  },

  "expected_fields": {
    "Gram Stain": "Negative",
    "Shape": "Rods",
    "Motility": "Positive",
    "Capsule": "Variable",
    "Spore Formation": "Negative",
    "Haemolysis": "Negative",
    "Haemolysis Type": "None",
    "Media Grown On": [
      "MacConkey Agar",
      "Blood Agar"
    ],
    "Colony Morphology": [
      "Smooth",
      "Grey",
      "Moist"
    ],
    "Oxygen Requirement": "Facultative Anaerobe",
    "Growth Temperature": "10//45",
    "Catalase": "Positive",
    "Oxidase": "Negative",
    "Indole": "Negative",
    "Urease": "Negative",
    "Citrate": "Positive",
    "Methyl Red": "Negative",
    "VP": "Positive",
    "H2S": "Negative",
    "DNase": "Negative",
    "ONPG": "Positive",
    "Coagulase": "Negative",
    "Gelatin Hydrolysis": "Positive",
    "Esculin Hydrolysis": "Positive",
    "Nitrate Reduction": "Positive",
    "NaCl Tolerant (>=6%)": "Negative",
    "Lipase Test": "Negative",
    "Lysine Decarboxylase": "Positive",
    "Ornithine Decarboxylase": "Negative",
    "Ornitihine Decarboxylase": "Negative",
    "Arginine dihydrolase": "Negative",
    "Glucose Fermentation": "Positive",
    "Lactose Fermentation": "Variable",
    "Sucrose Fermentation": "Positive",
    "Maltose Fermentation": "Positive",
    "Mannitol Fermentation": "Positive",
    "Sorbitol Fermentation": "Variable",
    "Xylose Fermentation": "Positive",
    "Rhamnose Fermentation": "Negative",
    "Arabinose Fermentation": "Positive",
    "Raffinose Fermentation": "Negative",
    "Trehalose Fermentation": "Positive",
    "Inositol Fermentation": "Negative",
    "Gas Production": "Variable",
    "TSI Pattern": "A/A",
    "Colony Pattern": "Unknown",
    "Pigment": "None",
    "Motility Type": "Peritrichous"
  },

  "species_markers": [
    {
      "field": "Indole",
      "value": "Negative",
      "importance": "high",
      "notes": "Helps distinguish E. cloacae from indole-positive Enterobacter species."
    },
    {
      "field": "Ornithine Decarboxylase",
      "value": "Negative",
      "importance": "high",
      "notes": "Useful discriminator within the Enterobacter cloacae complex."
    },
    {
      "field": "Rhamnose Fermentation",
      "value": "Negative",
      "importance": "medium",
      "notes": "Supports identification when combined with other biochemical results."
    }
  ],

  "common_confusions": [
    {
      "species": "Enterobacter hormaechei",
      "reason": "Closely related species within the E. cloacae complex with overlapping biochemical profiles."
    },
    {
      "genus": "Citrobacter",
      "reason": "Shared citrate positivity and sugar fermentation patterns."
    }
  ],

  "when_to_question_identification": [
    "Indole positivity suggests another Enterobacter species.",
    "Strong lactose fermentation may indicate Klebsiella or Escherichia.",
    "H2S production is inconsistent with E. cloacae."
  ],

  "recommended_next_tests": [
    {
      "test": "Ornithine decarboxylase",
      "reason": "Key discriminator within the Enterobacter cloacae complex."
    },
    {
      "test": "MALDI-TOF MS",
      "reason": "Reliable differentiation within the Enterobacter cloacae complex."
    },
    {
      "test": "Molecular identification",
      "reason": "Recommended due to close genetic similarity between species."
    }
  ]
}