Highlight
- Lower admission eosinophil counts correlate with increased ICU admissions and mechanical ventilation in community-acquired pneumonia (CAP) patients.
- An eosinophil count threshold of ≤10 cells/μL effectively stratifies patients at higher risk for greater hospital resource use.
- Eosinopenia at admission also associates with longer hospital length of stay, independent of systemic glucocorticoid treatment.
- Admission eosinophil count may serve as an accessible biomarker to guide healthcare resource allocation in CAP management.
