Effect of the COVID-19 Pandemic on Rates and Epidemiology of Clostridioides difficile Infection in One VA Hospital (preprint)

The COVID-19 pandemic was associated with increases in some healthcare-associated infections. We investigated the impact of the pandemic on rates and molecular epidemiology of Clostridioides difficile infection (CDI) within one VA Hospital. We anticipated that the potential widespread use of antibiotics for pneumonia during the pandemic might increase CDI rates given that antibiotics are a major risk for CDI. Hospital data on patients with CDI and recurrent CDI (rCDI) were reviewed pre-COVID-19 pandemic (2015 to 2019) and during the pandemic (2020 - 2021). Restriction endonuclease analysis (REA) strain typing was performed on CD isolates recovered from stool samples collected from 10/2019 – 3/2022. CDI case numbers declined 43.2% in 2020 – 2021 compared to the annual mean over the previous 5 years. Stool test positivity rate was also lower during the COVID-19 pandemic (14.3% vs. 17.2%; P = 0.013). Although inpatient volume declined, rates of CDI among inpatients were reduced by 34.2% in 2020 – 2021. Mean monthly cases of rCDI also declined significantly after 2020 [3.38 (95% CI: 2.89 – 3.87) vs. 1.92 (95% CI: 1.27 – 2.56); P = <0.01]. Prior to the pandemic, REA group Y was the most prevalent CD strain among the major REA groups (27.3%). During the first wave of the pandemic from March 8, 2020, through June 30, 2020, there was an increase in the relative incidence of REA group BI (26.7% vs. 9.1%. After adjusting for CDI risk factors, a multivariable logistic regression model revealed that odds of developing an REA group BI CDI increased during the first pandemic wave (OR 6.41, 95% CI: 1.03 – 39.91) compared to the pre-pandemic period. In conclusion, the incidence of CDI and rCDI decreased significantly during the initial waves of the COVID-19 pandemic. In contrast, REA BI (Ribotype 027), a virulent, previously epidemic CD strain and frequently associated with hospital transmission and outbreaks, reappeared as a prevalent strain during the first wave of the pandemic.

FRACTURE LIAISON SERVICE MANAGEMENT OF PATIENTS AGED 85 AND OLDER WHO SUSTAIN FRAGILITY FRACTURES: AUDIT AND QUALITY IMPROVEMENT

Background/Aims Osteoporosis is a burdensome disease internationally, that is commonly diagnosed following fragility fracture. In line with national guidance, in 2018 the North Staffordshire Fracture Liaison Service (FLS) changed their management policy of patients aged ≥85 years who sustain fragility fractures. Instead of calling these patients for a dual-energy X-ray absorptiometry (DXA) scan, a letter was sent to the patient's General Practitioner, advising the empirical commencement of oral bisphosphonates. This audit aimed to evaluate whether the recommendations in this letter were enacted by GPs. Following audit, the text of the letter was changed, and a re-audit conducted to evaluate changes in practice. Methods Patients aged ≥85 years sustaining a fragility fracture between December 2018 and October 2020 were identified from FLS records. Summary Care Records (SCRs) were used to identify whether each patient was receiving a bisphosphonate prescription at time of audit (October 2020). Analysis was descriptive, to report the proportion of patients prescribed a bisphosphonate. Quality improvement methodology informed changes to the standard letter, using GP feedback. Re-audit of fragility fractures occurring between December 2020 and May 2021 was undertaken in July 2021 to assess possible impact. Results 408 eligible patients were identified in the initial audit, of which 79% were female. SCR data was available for 396 patients;median time between fracture and data collection was 9 months. 160 patients (40%) had a bisphosphonate prescribed as an acute or repeat prescription, of which >90% were alendronic acid. Following the first audit cycle, the letter was changed to address barriers to clinical decision-making including advice on relative contraindications and referral. 74 patient SCRs were reviewed in the 2nd audit cycle (85% female) and 38 (51%) were recorded as prescribed a bisphosphonate (median time between fracture and assessment 5-months). Conclusion Rates of bisphosphonate prescribing, in people aged ≥85 following a recommendation letter sent to the GP, have increased from 40% to 51% following quality improvement initiative. Furthermore, the proportion of patients prescribed a bisphosphonate is similar to previous national data in patients post-DXA. This is of interest, particularly given the de-prioritisation of non-communicable diseases during the COVID-19 pandemic, and demonstrates that an intervention which requires little time, can result in changes in practice. Limitations of this work include that the SCR only includes contemporaneous prescribing data so the period of time between drug recommendation and audit was different in 1st and 2nd cycles, meaning that adherence may be expected to be higher in the 2nd cycle, because the period of time between letter and data collection was shorter, and not because of a change in our intervention.

Microbiota or placebo after antimicrobial therapy for recurrent Clostridioides difficile at home: A clinical trial with novel home-based enrollment.

INTRODUCTION: Clostridiodes difficile infection is the leading cause of infectious diarrhea in the United States, with substantial morbidity and mortality. Recurrent infection is especially challenging, with each recurrence increasing the likelihood of a successive recurrence, leading to cycles of prolonged symptoms, frequent antimicrobial use, and decreased quality of life. Fecal microbiota transplantation to prevent recurrent infection is a promising intervention with a large effect size in observational studies, but with conflicting results from randomized controlled trials. We are conducting a Veterans Affairs-wide randomized controlled trial utilizing centralized case identification, with enrollment and fecal microbiota transplant administration occurring at the participant's home. This type of trial design significantly improves trial efficiency, greatly decreases trial cost, increases consistency of trial administration, and most importantly makes nationwide clinical trials in less-common diseases possible. METHODS: This is a randomized comparison of capsule-delivered fecal microbiota transplant for the prevention of recurrent Clostridiodes difficile infection, administered after successful initial treatment of recurrent C. difficile infection with standard therapy. The primary endpoint is the incidence of recurrent C. difficile infection or death. Cases are identified by searching the Veterans Affairs Corporate Data Warehouse, with central study coordinators then reaching out to potential participants. Individuals meeting inclusion criteria and interested in participation are scheduled for in-home consent, randomization, and capsule administration, followed by telephone follow-up for 6 months. To mitigate risks of COVID-19, enrollment via video visits has been implemented. RESULTS: A total of 102 participants have been enrolled through January 2021. Centralized case identification and in-home enrollment has facilitated enrollment from 34 unique states, with 38% being from rural or highly rural areas. DISCUSSION: Centralized case identification and in-home enrollment is a feasible and innovative method of conducting randomized controlled trials in the Veterans Affairs system, improving access to clinical research for populations who may have difficulty engaging with the traditional model of clinical trials where enrollment is based at large hospitals in major metropolitan areas.