Antibiotic Coverage

Last updated: April 6, 2026, 6:50 PM Pacific Time (PDT)

Interactive spectrum tool for quickly visualizing how one or more antibiotics combine to cover common organism groups. Select any number of agents and compare individual rows with the combined regimen row.

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This is a simplified teaching graphic showing expected empiric spectrum by organism group, not isolate-level susceptibility. Always verify against local antibiograms, allergies, source, and patient-specific pharmacology.

Coverage Selector

Quick class selectors
By organism
By class
By clinical request
Gram-positive and skin agents
Cephalosporins by generation
Broad beta-lactams and adjunct gram negatives
Adjunct and PO-capable agents

Coverage graph

Sources

  1. Organism-group coverage and resistant gram-negative teaching notes were simplified from the IDSA 2024 Guidance on the Treatment of Antimicrobial-Resistant Gram-Negative Infections.
  2. MRSA and skin/soft tissue framework choices were informed by the IDSA 2014 Skin and Soft Tissue Infection guideline.
  3. Vertebral osteomyelitis treatment framing was informed by the IDSA 2015 Native Vertebral Osteomyelitis guideline.
  4. Pneumonia regimen framing was informed by the ATS/IDSA 2019 adult community-acquired pneumonia guideline.
  5. Sepsis-oriented empiric broad-spectrum framing was informed by the Surviving Sepsis Campaign 2021 adult guidelines.
  6. Route availability and labeled antibacterial-use framing were cross-checked against DailyMed prescribing information, including representative labels for cefepime, piperacillin-tazobactam, aztreonam, linezolid, and nitrofurantoin.
  7. This page remains a simplified educational visualizer rather than a validated antibiogram or organism-level susceptibility resource; local susceptibility data and formal infectious diseases guidance should take priority for patient care decisions.