IDSA/ATA CAP 2019criteria for severe vs nonsevere CAP. | HCAP concept still dead | start Abx regardless of procalcitonin | sputum culture all inpatient empirically treated for MRSA/Pseudomonas | Aspiration pneumonia - no need to add gut anaerobic coverage unless suspect lung abscess or empyema; coverage of oral anaerobes suffice -i.e. most beta-lactams | no steroids for nonsevere CAP, consider in refractory septic shock