Bacteroides fragilis: Video, Causes, & Meaning | Osmosis

USMLE High-Yield Questions on Instagram: "Unc lost social points with this one 📉☝️ ⸻ ANSWER + EXPLANATION ✅ C) Clindamycin Aspiration lung abscesses are caused by anaerobic oral flora (e.g., Bacteroides, Fusobacterium, Peptostreptococcus). The delayed presentation (days later) + cavitary lesion screams anaerobes. Clindamycin provides excellent anaerobic coverage and is a classic first-line choice (alternative: ampicillin–sulbactam). Key clues: • Aspiration risk • Subacute onset (not immediate)