ATS CAP Update 2025/26 — Diagnosis and Management of Community-acquired Pneumonia: An Official ATS Clinical Practice Guideline Update

Updates adult CAP guidance on lung ultrasound, antibacterial treatment when respiratory viral testing is positive, shorter antibiotic courses after clinical stability, and corticosteroids. ATS recommends against routine systemic corticosteroids in non-severe CAP and conditionally suggests them in severe CAP. IDSA did not endorse the update because of disagreement with some viral-positive CAP antibacterial recommendations, so those decisions require clinical-context and bacterial-coinfection assessment.