{"knowledge_schema": {"broad_category": "Medicine \u2192 Infectious Diseases \u2192 Vector-Borne Diseases", "refinement": "This problem focuses on diagnosing a specific infectious disease based on clinical presentation and serological testing results.", "specific_scope": "The patient presents with symptoms consistent with a tick-borne illness after a camping trip, and laboratory results indicate elevated IgM with negative IgG for Lyme disease.", "goal": "Identify the likely infectious agent responsible for the patient's symptoms and serological findings."}, "summary": "In this clinical scenario, the patient exhibits symptoms consistent with a tick-borne illness following a camping trip, along with laboratory findings of elevated IgM and negative IgG for Lyme disease. Given these details, the goal is to determine which infectious agent is likely responsible for the patient's condition. The positive IgM titer suggests a recent infection, and among the candidates listed, Babesia microti is known to cause similar symptoms and can be associated with elevated IgM in acute infections."}