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Respiratory tract infections (RTIs) drive many outpatient encounters and, despite being predominantly viral, are associated with high rates of antibiotic prescriptions. With rising antibacterial resistance, optimization of prescribing of antibiotics in outpatients with RTIs is a critical need. Fortunately, this challenge arises at a time of increasing availability of novel RTI diagnostics to help discern which patients have bacterial infections warranting treatment. Effective implementation of antibiotic stewardship is needed, but optimal approaches for ambulatory settings are unknown. Future research needs are reviewed in this summary of a research summit convened by the Infectious Diseases Society of America in the fall of 2019., (© The Author(s) 2020. Published by Oxford University Press for the Infectious Diseases Society of America. All rights reserved. For permissions, e-mail: journals.permissions@oup.com.)

Positive outcomes of antimicrobial stewardship programs in the inpatient setting are well documented, but the benefits for patients not admitted to the hospital remain less clear. This report describes a retrospective case-control study of patients discharged from the emergency department (ED) with subsequent positive cultures conducted to determine whether integrating antimicrobial stewardship responsibilities into practice of the emergency medicine clinical pharmacist (EPh) decreased times to positive culture follow-up, patient or primary care provider (PCP) notification, and appropriateness of antimicrobial therapy. Pre- and post-implementation groups of an EPh-managed antimicrobial stewardship program were compared. Positive cultures were identified in 177 patients, 104 and 73 in pre- and post-implementation groups, respectively. Median time to culture review in the pre-implementation group was 3 days (range 1-15) and 2 days (range 0-4) in the post-implementation group (P = .0001). There were 74 (71.2%) and 36 (49.3%) positive cultures that required notification in the pre- and post-implementation groups, respectively, and the median time to patient or PCP notification was 3 days (range 1-9) and 2 days (range 0-4) in the 2 groups (P = .01). No difference was seen in the appropriateness of therapy. In conclusion, EPh involvement reduced time to positive culture review and time to patient or PCP notification when indicated.