Inappropriate antibiotic use is a key driver of antibiotic resistance and one that can be mitigated through stewardship. A better understanding of current prescribing practices is needed to develop successful stewardship efforts. This study aims to identify factors that are associated with human cases of enteric illness receiving an antibiotic prescription. Cases of laboratory-confirmed enteric illness reported to the FoodNet Canada surveillance system between 2015 and 2019 were the subjects of this study. Laboratory data were combined with self-reported data collected from an enhanced case questionnaire that included demographic data, illness duration and symptoms, and antibiotic prescribing. The data were used to build univariable logistic regression models and a multivariable logistic regression model to explore what factors were associated with a case receiving an antibiotic prescription. The final multivariable model identified several factors as being significantly associated with cases being prescribed an antibiotic. Some of the identified associations indicate that current antibiotic prescribing practices include a substantial level of inappropriate use. This study provides evidence that antibiotic stewardship initiatives targeting infectious diarrhoea are needed to optimize antibiotic use and combat the rise of antibiotic resistance.

Rapid diagnostic tests that differentiate between Gram positive, Gram negative and the absence of aerobic bacteria in milk samples from dairy cows with clinical mastitis can support antimicrobial treatment decisions and contribute to a more prudent use of antimicrobials in the dairy industry. The objective of this study was to evaluate the test characteristics of the novel rapid BACT mastitis test in discriminating causes of clinical mastitis under laboratory conditions. Test outcomes of 155 milk samples from clinical mastitis cases were incubated for 14–16 h in the BACT test and compared to results of bacteriological culture. The accuracy for detection of bacterial growth and Gram positive growth was 91 and 89%, respectively. The BACT test could provide an accurate and relatively fast decision tool for farmers to aid in antimicrobial treatment decisions in cases of clinical mastitis.

This article explores the utility of implementation science (IS) as a method to promote the effective uptake of antimicrobial stewardship processes. Elements of IS can be readily incorporated into QI work and used as a platform to extend stewardship reach. As stewards are stretched to do more, IS can be a potential vehicle to ensure that our collective work is impactful, sustainable, and contributes more broadly to clinically relevant improvements.

COVID-19 therapies were challenging to deploy due to evolving literature and conflicting guidelines. Antimicrobial stewardship can help optimize drug use. We conducted a survey to understand the role of stewardship and formulary restrictions during the pandemic. Restrictions for COVID-19 therapies were common and approval by infectious disease physicians often required.

Transmission of bacteria between animals and humans in domestic households is increasingly recognized. We evaluated the presence of antimicrobial-resistant fecal bacteria in 8 dog-owner–dog pairs before and after the dog received amoxicillin-clavulanate. The study identified shared flora in the humans and dogs that were affected by antimicrobial administration.

The majority of antimicrobials that are produced are administered to animals, particularly food animals. While the overall impact of antimicrobial use in animals on antimicrobial resistance in humans and the environment is unclear, it undeniably has a role. Yet, some degree of antimicrobial use in animals is necessary for animal health and welfare purposes. Balancing the benefits and risks of antimicrobial use in animals is challenging because of the complexity of the problem and limitations in available data. However, a range of measures can be implemented to reduce, refine and optimize antimicrobial use in animals, with a goal of minimizing the impact on human and environmental health while maintaining necessary therapeutic use in animals. A pandemic instrument can provide the necessary foundation for the whole-of-society and whole-of government One Health approach that is required to strengthen surveillance, communication, collaboration, and action.

Antimicrobial resistance is a well-known global health threat that has higher prevalence in the refugee population. Although guidance has been provided by the World Health Organization and Centers for Disease Control and Prevention on implementing antimicrobial stewardship in lower- and middle-income countries, as well as by the United Nations Refugee Agency on other infection prevention and control efforts, no specific guidance exists for implementation of stewardship in this population. We highlight challenges specific to this population, review recent studies of interest within this space, and propose a research agenda to help move stewardship forward in the refugee population. We advocate for the importance of this issue, particularly given recent current events of geopolitical volatility that render this population more vulnerable, in the setting of its already well-known numerous health challenges.

After updating our health system’s Clostridioides difficile treatment protocols in 2018, we reviewed 104 unique hospital encounters involving fidaxomicin at 10 community hospitals. Half (50%) of regimens were adherent to our guidelines, with infectious diseases (ID) providers were frequently nonadherent. Antimicrobial stewardship programs are important for facilitating best practices, even among ID specialists.

Challenges for infection prevention and antimicrobial stewardship programs have arisen with the fourth wave of the coronavirus disease 2019 (COVID-19) pandemic, fueled by the delta variant. These challenges include breakthrough infections in vaccinated individuals, decisions to re-escalate infection prevention measures, critical medication shortages, and provider burnout. Various strategies are needed to meet these challenges.

In a survey of adult hospital providers regarding antibiotic use in the treatment of febrile neutropenia, clinical fellows, and pharmacists showed higher comfort levels with early antimicrobial de-escalation compared to hematology-oncology and transplant infectious diseases physicians. These frontline team members are ideal partners to champion antimicrobial stewardship interventions in febrile neutropenia.

Antimicrobial prescribing and the associated discipline of antimicrobial stewardship have inherent ethical and moral dimensions. We contend that the explicit, formal application of ethical principles and frameworks can strengthen and further justify the value of antimicrobial stewardship programs and their work. To illustrate the value of this process, we highlight 3 ethical scenarios that antimicrobial stewardship programs regularly encounter at the prescriber, institutional, and societal levels, and we analyze these scenarios using the Beauchamp and Childress biomedical ethics framework.

Over 3 months, we provided monthly education to internal medicine residents and distributed resources regarding penicillin-allergy history taking. Allergy information in the electronic record was updated more often during the intervention compared to the period before the intervention (16.1% vs 10.9%; P = .02). Education and interdepartmental collaboration have the potential to affect provider behavior.