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We aimed to assess prescribing practices, compliance with guidelines, and outcomes for patients who were admitted to the authors’ institution with community-acquired pneumonia (CAP).

We performed a single-center retrospective cross-sectional study of adults with CAP presenting during the 2019 influenza season. CAP severity was assessed using the CURB-65 risk score. The effect of CURB-65 risk score use on the rate of appropriate antimicrobial prescribing was assessed using the chi-square test and reported as odds ratio (OR). Fisher’s exact test was used to assess the relationship between prescribing appropriateness and patient outcomes.

Patients with low-risk CAP were most likely to be inappropriately prescribed antimicrobials (OR: 4.77; 95% confidence interval: 2.44–10.47). In low-risk CAP, the most common prescribing error was overuse of ceftriaxone. In high-risk CAP, the …