Infection Precautions Research Articles

588. The Association Between Contact Precautions for Methicillin-resistant Staphylococcus aureus (MRSA) Colonization and MRSA Bloodstream Infection (BSI) Rates in Los Angeles County Hospitals: Results of a Countywide Survey

Abstract Background Contact precautions are frequently used to prevent in-facility transmission of MRSA, but their efficacy has been questioned. We hypothesized that contact precautions use would not correlate with MRSA bloodstream infection (BSI) rates in LA County hospitals. Methods The LA County Department of Public Health conducted a survey of LA County acute care hospitals’ use of contact precautions for MRSA colonization, history of MRSA infection/colonization, and active MRSA infection with or without uncontained purulence. We modeled National Healthcare Safety Network (NHSN) reported healthcare-associated MRSA BSI rates from 2022-23 via a negative binomial multivariable regression model. We controlled for hospital type (general acute care hospitals vs. long-term acute care hospitals (LTACHs)), number of intensive care unit (ICU) beds, and MRSA BSI admission prevalence rates. Results Of the 82 acute care hospitals in LA County, 69 completed the survey (84% response rate). MRSA contact precaution use was stratified into three groups: Least strict (no contact precautions or contact precautions only for active infection with uncontained purulence, 24% of hospitals), intermediate (contact precautions for any active infection, 32% of hospitals), and most strict (contact precautions for >2 reasons, 44% of hospitals). We found higher MRSA BSI in LTACHs vs. hospitals (Incidence rate ratio [IRR] 3.50, 95% CL 1.80-6.80, p = 0.0002), but no relationship with ICU beds (IRR 1.00, 95% CL 0.99-1.01, p = 0.15), MRSA BSI admission prevalence rates (IRR = 4.40, 95% CL 0.30-63.10, p = 0.27), or contact precaution use (IRR 0.80, 95% CL 0.50-1.30, p = 0.29 for the least strict group; IRR 1.40, 95% CL 0.89-2.20, p = 0.14 for the intermediate group, both in comparison to the most strict group). Conclusion Our survey of hospitals across LA County, which has a population of ∼10 million, found no significant association between stringency of MRSA contact precaution use and healthcare-associated MRSA BSI rate. Our findings support other data that fail to find clinical benefit to contact precautions for MRSA colonization/infection. Considering potential downsides of contact precautions for MRSA, the assumption that MRSA requires contact precautions may need to be reconsidered. Disclosures Loren G. Miller, MD MPH, Armata: Grant/Research Support|Contrafect: Grant/Research Support|GSK: Grant/Research Support|Merck: Grant/Research Support|Paratek: Grant/Research Support

Development of a metabolome-based respiratory infection prognostic during COVID-19 arrival.

In a new respiratory virus pandemic, optimizing allocation of scarce medical resources becomes an urgent challenge. Infection prognosis takes on particular importance when allocating scarce antiviral antibodies and drugs, which are most effective when administered before the onset of severe disease. During arrival of the COVID-19 pandemic to the United States in 2020, we conducted a prognostic biomarker discovery and validation effort based upon metabolomic profiling with a liquid-chromatography-mass spectrometer (LC-MS) type used clinically for rapid toxicology. We obtained urine specimens from 163 patients presenting for evaluation. We obtained LC-MS profiles in the initial cohort and used machine learning methods to define a simplified urine metabolomic signature associated with respiratory failure or death by 90 days. This signature was composed of three metabotypes linked to intestinal microbiome metabolism and anticonvulsant use, with a receiver-operator characteristic area under the curve (ROC AUC) of 89.4%. Blinded application of this signature to the subsequent validation cohort yielded a ROC AUC of 81.2%. A model trained on the two baseline metabotypes present before intubation exhibited similar performance in the validation cohort. This study demonstrates the plausibility and promise of rapid metabolome-based prognostic discovery and validation in the opening wave of a pandemic. The approach used here could be used to inform therapeutic and resource allocation decisions early in a future epidemic.IMPORTANCEIn a new respiratory virus pandemic, the ability to identify patients at greatest risk for severe disease is essential to direct scarce medical resources to those most likely to benefit from them. Tools to predict disease severity are best developed early in a pandemic, but laboratory-based resources to develop these may be limited by available technology and by infection precautions. Here, we show that an accessible metabolic profiling approach could identify a prognostic signature of severe disease in the initial wave of COVID-19, when patients presenting for care often exceeded the available doses of convalescent plasma and remdesivir. In a future pandemic, this approach, alongside efforts to identify clinical disease severity predictors, could improve patient outcomes and facilitate therapeutic trials by identifying individuals at high risk for severe disease.

10 Optimizing implementation and continuous monitoring of a newborn screening program for severe combined immunodeficiency

Abstract Background Severe Combined Immunodeficiency (SCID) is an inborn error of immunity characterized by severely low T cell levels and function. Early diagnosis is essential to prevent serious infections and improve outcomes. Newborn screening (NBS) for SCID provides a way to detect SCID and other conditions associated with T cell lymphopenia in the neonatal period. Objectives 1) Optimize the implementation of a NBS program for SCID in British Columbia (BC), Canada; and 2) create a systematic method for monitoring the diagnoses and outcomes of infants with a positive screen to facilitate continuous improvement of the NBS program. Design/Methods An interdisciplinary working group comprised of immunologists, biochemical geneticists, and hematopathologists met at regular intervals prior to and after implementing NBS for SCID in BC. We developed an algorithm for the evaluation and initial management of infants with an abnormal NBS for SCID based on literature review and local expert consensus. Using a REDCap database, we tracked the prevalence, evaluation, diagnoses and outcomes of infants with a positive NBS. The database also monitored diagnoses and outcomes of children referred to Immunology outside of the NBS program. Plan-do-study-act cycles included creation of clinical and educational guidelines on SCID, optimization of abnormal NBS cut-off values, and reflex chromosomal microarray (CMA) testing of infants with confirmed T cell lymphopenia. Results Between October 3, 2022 and June 16, 2023, 28,816 initial samples were tested, and 30 infants had a positive screen for SCID. Of the 30 infants, 10 were ultimately diagnosed with conditions associated with T cell lymphopenia. Diagnosis led to avoidance of live viral vaccines and implementation of infection precaution measures. No infants experienced complications related to live viral vaccine administration, compared to 1 case in the preceding 12 months prior to NBS implementation. In February 2023, the threshold for an abnormal NBS was adjusted to achieve the goal positive screen frequency of 0.1%. Performing reflex CMA testing on infants with confirmed T cell lymphopenia led to rapid diagnosis of chromosomal microdeletion syndromes, avoiding unnecessary second tier testing. Since implementing NBS for SCID in BC, there have been no cases of SCID diagnosed outside of the NBS program. Conclusion Establishing an interdisciplinary working group and clinical database facilitated the smooth integration and continuous improvement of NBS for SCID in BC. This model can be applied to other healthcare systems to support teams and ensure the best possible outcomes for affected patients.

Drivers and Facilitators of HIV-Related Stigma in Healthcare Settings in Ireland

People living with HIV who experience stigma in healthcare settings are at increased risk for engaging in health avoidance behaviours, suboptimal adherence to antiretroviral therapy, and viral non-suppression. HIV-related stigma erodes trust between patients and healthcare providers, thereby undermining both individual and public health. This study aimed to identify predictors of stigmatising attitudes, stigma practices, and fear of occupational transmission among healthcare workers in the Republic of Ireland. Data were collected from 295 healthcare workers using a standardised tool designed to measure HIV-related stigma. The outcomes examined were stigmatising attitudes, stigmatising practices (such as excessive infection precaution measures), and fear of occupational transmission. Multiple linear regression analyses were conducted to explore predictors at the individual, clinic, and policy levels. The results indicated that none of the models significantly predicted stigmatising attitudes. However, stigmatising practices were positively associated with never having worked in an HIV clinic, lack of knowledge or agreement with the concept of ‘undetectable equals untransmittable’ (U = U), and the presence of institutional policies, collectively accounting for 25.3% of the variance. Fear of occupational transmission was positively predicted by gender and lack of knowledge or agreement with U = U, explaining 23.8% of the variance. The findings highlight the critical role of U = U knowledge in reducing stigma-related behaviours and fears among healthcare workers. Enhancing knowledge and acceptance of U = U as part of comprehensive stigma interventions may help reduce the stigma experienced by people living with HIV in healthcare settings.

Duration of PCR positivity by type of respiratory virus among children using a multiplex PCR test.

Prolonged positive polymerase chain reaction (PCR) results, irrespective of the transmission risk, can lead to prolonged restrictions on daily activities and infection precaution interventions. Studies evaluating the duration of PCR positivity for multiple pathogens in a single patient cohort are scarce. This study aimed to evaluate and compare the durations of PCR positivity for multiple respiratory viruses among children and adolescents. This retrospective study was conducted between April 2018 and March 2024 using a multiplex PCR respiratory panel for symptomatic children and adolescents who had at least two tests within 90 days of study period, with the first PCR test positive. The rate and likelihood of persistent PCR positivity were evaluated for multiple respiratory viruses. For 1325 positive results, repeat tests were conducted within 90 days. The persistent PCR positivity rate at repeat testing decreased over time (60.6%, Days 1-15 and 21.7%, Days 76-90, after the first test). In multivariate logistic regression analysis, an increased likelihood of persistent PCR positivity was observed for rhinovirus/enterovirus and adenovirus, whereas decreased likelihood of persistent positivity was seen in influenza and seasonal coronaviruses, compared with parainfluenza viruses. Persistent PCR positivity is common for multiple respiratory viruses in symptomatic children.

Corneal Complications Related to Dupilumab Use.

The aim of this report is to describe atypical corneal complications associated with dupilumab use. This is a series of four cases of adult patients with infiltrative or ulcerative keratitis secondary to dupilumab use. All four patients in this series were prescribed dupilumab for the treatment of atopic dermatitis and developed infiltrative or ulcerative corneal lesions. In all cases, corneal disease was successfully managed with immediate discontinuation of dupilumab and topical steroid treatment. In two cases, the patient also received antibiotic eye drops for infection precautions. Although dupilumab is most commonly associated with conjunctivitis, physicians should be aware of potential severe corneal complications for early identification and intervention.

Prevalence, Patterns, and Predictors of SARS-CoV-2 RNA and Culturable Virus in Tears of a Case-Ascertained Household Cohort

To investigate the prevalence, patterns, and predictors of SARS-CoV-2 RNA and culturable virus in tears of a case-ascertained household cohort. Prospective, longitudinal case-ascertained household cohort identified through convenience sampling. This analysis was restricted to individuals who were non-hospitalized, symptomatic, and tested positive for SARS-CoV-2 by nasal RT-PCR. Tears and anterior nasal biospecimens were serially collected throughout the acute period. Tears specimens were collected by the study staff using Schirmer test strips, and nasal specimens were self-collected. For both, SARS-CoV-2 RNA was quantified using qRT-PCR, and culturable virus was detected using presence of cytopathic effect (CPE) in tissue culture; positive CPE was confirmed by a qRT-PCR step. A series of cross-sectional unadjusted analyses were performed investigating the relationship between different sociodemographic determinants and biological factors associated with tears RNA positivity. Among the 83 SARS-CoV-2 infected participants, 10 (12%) had at least one RNA-positive tears specimen. Amongst these 10, 5 (50%) had concurrent presence of culturable virus, at a median of 7 days postsymptom onset (IQR: 4-7 days) (absolute range: 4-8 days). In this longitudinal cohort, we found evidence of culturable virus in the tears of a small proportion of nonhospitalized SARS-CoV-2 infected individuals. Current public health infection precautions do not account for transmission via tears, so these findings may improve our understanding of potential sources of SARS-CoV-2 transmission and contribute to developing future guidelines.

Accidental Exposure to Body Fluids Among Healthcare Workers in a Referral Hospital in the Security-Challenged Region of South West Cameroon

Introduction: Accidental exposure to body fluids (AEBs) increases the risk of blood-borne infections among susceptible healthcare workers (HCWs). While 90% of the AEB reported occur in developed nations, they bear 90% of the burden of healthcare associated infections, sub-Saharan Africa. Social insecurity may contribute further to the vulnerability of HCWs. Our study sought to prevalence, reporting and management of AEBs among HCWs in the South-West Cameroon Region of Cameroon, that experiences security challenges since the year 2016. Methods: A cross-sectional study was carried out from February 2023 to April 2023, at the Buea Regional Hospital. Following informed consent, a 28-items questionnaire was administered to HCW. Data was entered and analyzed using R Statistics version 4.3.1. Results: Out of the 230 HCWs that were approached, 200 responded for a participation rate of 85%. The prevalence of AEB was high (93%). Exposures occurred while administering injections (37%), during blood sample collection (16%), delivery (11%), surgery (10.2%) and washing. The main risk factors for AEB included female gender (aOR=2.86) and in working the medical (aOR=5.95), pediatrics (aOR=10.5), obstetrical (aOR=22.6), and dental (aOR=26.3) units. Despite their high prevalence, only 46.8% of AEBs were reported. Post-exposure management was carried out for 67.2% of the reported cases. Most HCWs were unaware of the existence of an Infection Control Committee within the study setting, corroborating gaps in the observance of Standard Precautions. Conclusions: Most HCWs experienced AEBs over the last year. The study underscores a critical gaps in awareness and adherence to standard precautions. There is a need to sensitize and enforce the observance of Standard precautions for infection and control among HCWs of the Buea Regional Hospital. Such measures should be extended to other satellite health facilities.

Toward Sustaining Web-Based Senior Center Programming Accessibility With and for Older Adult Immigrants: Community-Based Participatory Research Cross-Sectional Study.

During the COVID-19 pandemic, many community-based organizations serving Asian Americans pivoted to provide web-based care and social services. Asian American community leaders in the United States Pacific Northwest, including Asian Health & Service Center expressed that there are older immigrant adults who experienced backlash from discrimination, fear, and anxiety owing in part to anti-Asian hate and isolation, including from infection precautions. Pivoting supported staying safe from COVID-19 transmission and anti-Asian hate crimes. This study aims to examine the readiness of diverse groups of older Asian American immigrant adults (Chinese, Koreans, and Vietnamese) to use a web-based senior center, including technology access and telehealth use, and to identify the psychosocial health impacts that a web-based senior center could be positioned to meet. A community-based participatory research approach was used to conduct a cross-sectional survey study in an Asian-based health and service center in 2022. We selected surveys from the National Institutes of Health-supported PhenX Toolkit. Analyses were performed using R software. There was an 88.2% (216/245) response rate. Overall, 39.8% (86/216) of participants were Chinese, 25% (54/216) were Korean, and 24.5% (53/216) were Vietnamese. There were significant group differences in mobile data plans (P=.0005). Most had an unlimited mobile data plan (38/86, 44% Chinese; 39/54, 72% Koreans; 25/53, 47% Vietnamese). Significant group differences existed regarding whether they started using a new electronic device to communicate with friends or family after the COVID-19 outbreak (P=.0005); most were Korean participants (31/54, 57%). For written text and audio or video apps, most Chinese participants used WeChat (65/85, 76%; 57/84, 68%, respectively), most Koreans used KakaoTalk (49/54, 91%; 49/54, 91%, respectively), and most Vietnamese used Facebook Messenger for written text (32/50, 64%) and Apple Face Time (33/50, 66%) or Facebook Messenger (31/50, 62%) for audio or video. Significant group differences existed regarding whether to try telehealth (P=.0005); most Vietnamese expressed that they would never consider it (41/53, 77%). Significant group differences existed regarding how well they were able to concentrate (χ22=44.7; P<.0001); Chinese participants reported a greater inability (median 5, IQR 4-6). With regard to difficulties in life experiences (χ22=51; P<.0001), the median was 6 (IQR 5-7) for the Vietnamese group. Significant group differences existed in having had a family/household member's salary, hours, and contracts reduced (P=.0005) and having had a family/household member or friend fallen physically ill (P=.0005)-most Vietnamese (15/53, 28%) and Korean participants (10/53, 19%). To build an efficacious, web-based senior center with web-based care and social service options, more older adults need access to the internet and education about using technology-enabled communication devices. Addressing the unique psychosocial impacts of the COVID-19 pandemic on each group could improve health equity. The strength of the participating older adults was observed and honored.

Infection precaution adherence varies by potential exposure risks to SARS-CoV-2 and job role: Findings from a US medical center

BackgroundInfection precautions (IP) facilitate standardized and safe patient care. Research has demonstrated several barriers to IP adherence among health care personnel (HCP) but potential exposure risk to SARS-CoV-2 and job role has not been considered. MethodsResearchers used self-reported baseline surveys with 191 HCPs at a university medical center to examine factors that may have affected IP adherence (eg, personal protective equipment [PPE] and hand hygiene errors) over the 2 weeks prior to the survey. Chi-square tests were used to determine if differences existed first, among job role and IP adherence, and second, the potential risk of exposure to SARS-CoV-2 and IP adherence. A binary logistic regression estimated if PPE nonadherence was associated with COVID-19 stress, job role, and potential exposure risk to SARS-CoV-2. ResultsPPE nonadherence varied by job role. Those in the Other group (ie, nonphysician/non-nursing HCP) reported significantly fewer errors (9.6%) compared to Physicians (26.5%) and Registered Nurses (33.3%). Hand/glove hygiene errors between COVID-19 patient rooms varied by job role. Respondents who had higher risks of exposure to SARS-CoV-2 were 5.74 times more likely to experience errors. ConclusionsThe results provide implications for adopting systems-level approaches to support worker knowledge and engagement across job roles to improve IP adherence.

Review of strategies to prevent infections related to ultrasound-guided nerve blocks and vascular access

Ultrasound guidance has become ubiquitous in the clinical practice of regional anesthesia and vascular access. Because the ultrasound transducer and an acoustic coupling medium (e.g. ultrasound gel) are applied directly to the patient’s body, the contact of a non-sterile ultrasound transducer with the site of intervention during the breach of the skin integrity by the needle carries the risk of infection transmission. Surprisingly, however, recommendations on how to prevent ultrasound-related outbreaks are often conflicting. With the increasing use of ultrasound in interventional procedures, such as vascular access, regional anesthesia, and pain medicine, the development of clear guidelines on how to prevent infection from patient to patient is essential for patient and operator safety. This review aims to provide a current understanding of the mechanisms and prevalence of infection transmission and to summarize the current recommendations for infectious precautions with interventional ultrasound. We also provide practically implementable and pragmatic recommendations for infectious precautions, based on the available information.

Optimizing discharge readiness to reduce health disparities for at-risk children with cancer in the Bronx.

407 Background: Transitions in care between hospital and home are overwhelming for patients and families, and often result in medical errors. Children with cancer are at an increased risk of adverse outcomes due to their immunocompromised state. Despite a robust therapeutic armamentarium, unfavorable outcomes secondary to disease- and treatment-related complications remain a challenge, and children with cancer are particularly vulnerable to these outcomes during transitions of care. At our institution, the pediatric oncology team noted that caregivers of patients with new pediatric cancer diagnoses often admitted to confusion regarding infection precautions, central venous catheter care, and medications when returning for follow up appointments. This experience is supported by data showing that caregivers of patients with leukemia feel subjectively unprepared to take care of patients after hospital discharge. The increasing prioritization of outpatient management in healthcare has shifted responsibility for identifying and managing emergencies and complications to caregivers. Methods: We initiated a comprehensive cancer-specific program through the use of quality improvement measures and four plan-do-study-act (PDSA) cycles to ensure consistency of healthcare provider-delivered education and improve caregiver knowledge of homecare instructions in a high-risk patient population. Results: Based on our recent publication, overall retention of key discharge information was greater in the intervention cohort compared to the non-intervention cohort (median total scores: 89 and 63, respectively; p=0.001). Improvements in the proportions of correct responses post-intervention were also observed across all subject matters: from 0.57 to 0.88 for fever guidelines (p=0.059), from 0.71 to 0.78 for signs of sepsis (p=0.65), from 0.57 to 1.00 for accurate choice of on-call number (p=0.004), and from 0.71 to 0.94 for antiemetic management (p=0.14). Conclusions: Our study demonstrated that standardized processes with a multi-disciplinary team and task allocation significantly improves ability of caregivers to retain important information after a new cancer diagnosis, with specific improvement in retention of fever guidelines and on-call contact instructions. During our intervention, it became clear that as team members change (residents changing cycle, oncologist going off service, nurses switching), having one point person is absolutely critical in ensuring discharge education continues. We anticipate that a dedicated patient navigator focused on consistent psychosocial screening and health literacy comprehension of key discharge details would lead to a marked improvement in cancer care delivery for children with cancer in the Bronx; specifically, discharge readiness, medication adherence, family satisfaction, and patient safety for children with cancer in the Bronx.

Perceptions of COVID-19 and the Use of Health Information Technology Among People Who Are Uninsured: Multimethod Survey Study.

As of May 2023, the novel SARS-CoV-2 has claimed nearly 7 million lives globally and >1.1 million lives in the United States. Low-income populations are often disproportionately affected by risk factors such as lifestyle, employment, and limited health literacy. These populations may lack the knowledge of appropriate infection precautions or have reduced access to care during illness, particularly in countries without universal health care. We aimed to explore the perceptions and experiences of COVID-19, including symptoms and risk factors among uninsured individuals seeking care at a free medical clinic, and to obtain respondents' perceptions of and suggestions for adapting a mobile health (mHealth) app to an uninsured population known to have low health literacy. We conducted a prospective multimethod survey study with a convenience sample of uninsured adults seeking care at 3 free clinics in the United States. Respondents were questioned about their risk for and awareness of COVID-19 symptoms, COVID-19 testing, current technology use, and the use of technology to facilitate their health regarding COVID-19. Data were analyzed using descriptive statistics (eg, frequencies and mean differences). In addition, a small subset of respondents from one of the clinics (n=10) participated in interviews to provide feedback about the design of a COVID-19 web-based smartphone (mHealth) app. The survey respondents (N=240) were 53.8% (n=129) female, were primarily White (n=113, 47.1%), and had a mean age of 50.0 (SD 11.67; range 19-72) years. Most respondents (162/222, 73%) did not think that they were at risk for COVID-19. Although respondents reported only moderate confidence in their knowledge of the short- and long-term symptoms of COVID-19, their knowledge of the symptoms aligned well with reports published by the Centers for Disease Control and Prevention of the most common acute (590/610, 96.7%) and long-term (217/271, 80.1%) symptoms. Most respondents (159/224, 71%) reported an interest in using the mHealth app to gain additional information regarding COVID-19 and available community resources. Respondents who were interviewed provided suggestions to improve the mHealth app but had overall positive perceptions about the potential usefulness and usability of the app. It was encouraging that the knowledge of COVID-19 symptoms aligned well with the reports published by the Centers for Disease Control and Prevention and that respondents were enthusiastic about using an mHealth app to monitor symptoms. However, it was concerning that most respondents did not think they were at a risk of contracting COVID-19.

Blueprints for well-being: Modeling the way through Human-Centered Leadership and Pathway to Excellence.

Blueprints for well-being: Modeling the way through Human-Centered Leadership and Pathway to Excellence.

Risk Factors Associated with Nurses’ Infection with COVID-19

Nurses represent the largest number of health care providers and they are an essential part of the healthcare workforce working on the frontline during the COVID 19 pandemic. They are in direct contact with patients, providing high levels of care to promote patient safety and positive care outcomes while at the same time placing their own health and well-being at considerable risk. The Aim: To investigate the cause of COVID 19 infection amongst nurses. Methods: A self-administered online questionnaire was administered to the targeted sample who participated on a voluntarily basis. Result: 123 surveys were completed. The majority of the participants were compliant with infection precaution protocols. More than half of them were aware of the source of infection. Conclusion: Nurses are well oriented in dealing with Covid 19 crisis. However, more awareness is needed regarding infection precaution and reducing level of anxiety.

405. Utilization of a novel humble inquiry interview approach in assessing implementation barriers to a Nurse Driven Clostridioides difficile infection (CDI) order set

Abstract Background Timely diagnosis and use of contact precautions for Clostridioides difficile infection (CDI) is key to prevent spread in hospital settings. Empowering nursing staff to order stool tests and proactively implement precautions has been shown to reduce hospital acquired CDI. Our institution established a nurse driven CDI order set in 2019, however only 1% of tests were ordered by nurses in the past year. The goal of this quality improvement project was to understand current use of the nurse-driven CDI order set using a novel humble inquiry approach. Methods We used humble inquiry, an interview approach that poses questions while building relationships with participants through humility, curiosity, and active listening skills to explore barriers to utilization of a nurse driven CDI order set. Two nursing students at a 182-bed Veterans Health Administration (VA) hospital were trained to use humble inquiry and a three-item interview guide. A convenience sample of nurses and nursing assistants were interviewed about a) what they know about the nurse driven CDI order set, b) where there is documentation about the order set and c) barriers to use of the order set (if any). Interviews were conducted from January to April 2022. Demographics were analyzed descriptively. Interview data and the experience of conducting humble inquiry were analyzed using manifest content analysis. Results Interviews (n=19) with nurses (n=16) and nursing assistants (n=3) revealed the majority (13/19 = 68%) were not aware of the nurse driven CDI order set. Of those aware, most were able to identify the location of information on their unit and where to document in the electronic medical record. The two most common barriers included lack of awareness of the order set and patient reluctance to disclose their bowel habits. Delay in providers reading notes (3/19=16%) and lack of PPE during COVID (1/19= 5%) were also identified as barriers. The nursing students reported the humble inquiry approach allowed participants to be the “experts” and “teachers”. Table IIllustrative quotes from interview answers and associated demographic information. Conclusion The humble inquiry method was valuable in understanding viewpoints and identifying barriers to utilization of a nurse drive CDI order set. Lack of awareness of the order set and patient modesty were identified as barriers and may be targeted for future interventions. Disclosures All Authors: No reported disclosures.

Perceived Covid-19-crisis intensity and family supportive organizational perceptions as antecedents of parental burnout: A study conducted in Italy in March/April 2021 and 2022.

The purpose of this study is to investigate to what extent perceived Covid-19-crisis intensity (PCCI) leads to the experience of parental burnout (PB), a syndrome characterized by exhaustion, emotional detachment from one’s own children and a sense of inefficacy in the role as parent. Furthermore, the mediating role of work–family conflict (WFC) is examined. The buffering effect of family supportive organizational perceptions during the pandemic (FSOP-p) on the relationship between work–family conflict and parental burnout is also explored. Data were collected in March–April 2021 and March/April 2022. In spring 2021, 222 Italian working parents with at least one minor child living at home filled out the questionnaire. Data from 2021 showed that PCCI was positively related to the experience of parental burnout. Moreover, WFC mediated this relationship. No significant interaction effect was found for FSOP-p; however it was found that FSOP-p is negatively related to PCCI and WFC, and indirectly to parental burnout. In spring 2022, we examined whether there were changes in PCCI, WFC, and FSOP-p in a sample of 83 Italian parents. Moreover, for the second data collection we examine the tensions experienced by parents in their families about vaccination and infection precaution measures (e.g., Covid-19 vaccination passport). The results are different in 2022; the effect of PCCI on parental burnout is now completely mediated by the amount of WFC. It seems that now we go ‘back to normal’ and homeworking has become more optional for many, there is still an effect of PCCI on WFC, but no longer directly on parental burnout. Furthermore, the prevalence of PCCI in 2022 is lower than in 2021, while WFC and FSOP-p are not significantly different between the two timepoints. As family supportive organizational perceptions reduce the level of perceived Covid-19 intensity, organizations are urged to develop practices of support and to create a supportive environment.

CLL-211 Humoral Immune Response Following COVID-19 Vaccination in Patients With Chronic Lymphocytic Leukemia (CLL) and Indolent Non-Hodgkin Lymphoma (NHL): Results From a Large, Single-Center Observational Study

Context: CLL and indolent NHL are hematologic malignancies that typically result in immune dysfunction. Infection represents a major cause of morbidity and mortality in these patients. Patients with CLL and NHL are at higher risk of hospitalization and death from COVID-19.3 Data is lacking regarding the effectiveness of COVID-19 vaccination in this patient population. Objective: Determine antibody (Ab) response rate (RR) to the COVID-19 vaccination in patients with CLL and indolent NHL. Design: A retrospective, observational study of patients seen between January and October 2021. Updated data was collected until May 27, 2022. Setting: Patients followed in a lymphoma clinic at the Robert H. Lurie Comprehensive Cancer Center. Participants: 398 patients were screened for eligibility. Inclusion criteria were confirmed diagnosis of CLL or indolent NHL, completion of a full vaccination series with either Johnson & Johnson, Moderna, or Pfizer, and Ab testing within 6 months of the initial vaccination series. Main Outcome Measures: SARS-CoV-2 Ab titers were obtained after completion of a full vaccination series and, if applicable, after a third vaccine dose. Ab response was considered positive if either total Ab titer or IgG spike protein Ab was positive. Comparisons were performed using chi-square tests. Results: 240 patients were included in the final analysis. Ab response to the initial vaccination series was 50% (91/181) in CLL and 69% (41/59) in other indolent NHLs. For CLL patients, there was a higher Ab RR in patients receiving the Moderna compared to the Pfizer vaccine (61% vs 44%, p=0.028). Current or prior cancer therapy correlated with a lower Ab RR (36% vs 68%, p<0.0001). Use of anti-CD20 agents in the year prior to vaccination resulted in a lower Ab RR (12% vs 53%, p<0.0001). Of the 71 patients with negative Ab response who subsequently received a third vaccine dose, 38% (27/71) developed a measurable Ab response. Conclusions: Ab RR to COVID-19 vaccination is suboptimal in patients with CLL and indolent NHL, and continued infection precautions should be employed. The Moderna vaccine may provide superior humoral immunity to COVID-19 in patients with CLL. A third vaccine dose increases Ab RR in this patient population.

Investigation of Leishmania infantum Seroprevalance and Leishmaniasis Knowledge Level in Northern Cyprus

Leishmaniasis is an infectious disease caused by Leishmania parasites, transmitted by sand flies and common in the Mediterranean region. Cyprus is located in the east of Mediterranean Sea and is considered endemic for Leishmaniasis. In our study, it was aimed to investigate Leishmania infantum IgG seropositivity in healthy volunteers living in different regions of Northern Cyprus and to determine the risk factors for Leishmaniasis and measure the level of public knowledge about the disease. A total of 300 healthy volunteers (farmer/livestock: 100, hunter: 100, control group: 100) from five different regions of Northern Cyprus were included in the study, including Nicosia, Kyrenia, Famagusta, Morphou/Lefka, and Trikomo/Karpasia. The participants' blood was drawn and prepared questionnaire forms were filled out. Collected blood was centrifuged and the serum samples were separated and stored at -80ºC until the day of the test. All serum samples were tested for L.infantum IgG specific antibodies using the ELISA method (NovaTec, Immundiagnostica GmbH, Germany) in accordance with the manufacturer's recommendations. L.infantum IgG positivity was found to be 4.7% (14/300). The mean ages of L.infantum IgG positive and negative participants were 43.64 ± 11.74 and 42.17 ± 14.32 respectively. There was no statistically significant relationship between seropositivity and age (p= 0.706). The positivity rate was found to be significantly higher in hunters and farmers/livestocks compared with the control group (p= 0.020). In addition, it was determined that having a dog and the number of dogs owned were significantly associated with Leishmaniasis (p= 0.017, p= 0.020, respectively). On the other hand, 77% (231/300) of the volunteers included in our study had no prior knowledge about the disease. When compared to the other study groups, it was determined that hunters had the most knowledge of the Leishmaniasis infection (p= 0.001). Moreover, it was observed that as the education level of the participants increased, the level of knowledge about the disease also increased in parallel (p≤ 0.001). According to the results in our study, L.infantum IgG seropositivity was undeniably high in the healthy population living in Northern Cyprus. It is clear that outdoor activities such as hunting or dealing with farming/livestock are risk factors for the disease. In this context, it is apparent that more clear results will be obtained about the prevalence of the disease with the conduction of large-scale epidemiological studies. As a result, we concluded that especially risk groups should be informed about the current status of Leishmaniasis infection and necessary precautions should be taken.

Psoriasis and Post-Surgical Infections in Primary Total Knee Arthroplasty: An Analysis of 10,727 Patients

BackgroundPsoriasis is a dermatologic condition characterized by erythematous plaques that may increase wound complications and deep infections following total knee arthroplasty (TKA). There is a paucity of evidence concerning the association of this disease and complications after TKA. This study aimed to determine if patients who have psoriasis vs non-psoriatic patients have differences in demographics and various comorbidities as well as post-operative infections, specifically the following: (1) wound complications; (2) cellulitic episodes; and (3) deep surgical site infections (SSIs). MethodsWe identified 10,727 patients undergoing primary TKA utilizing an institutional database between January 1, 2017 and April 1, 2019. A total of 133 patients who had psoriasis (1.2%) were identified using International Classification of Diseases, Tenth Revision codes and compared to non-psoriatic patients. The rate of wound complications, cellulitic episodes, and deep SSIs were determined. After controlling for age and various comorbidities, multivariate analyses were performed to identify the associated risks for post-operative infections. ResultsPsoriasis patients showed an increased associated risk of deep SSIs (3.8%) compared to non-psoriasis patients (1.2%, P = .023). Multivariate analyses demonstrated a significant associated risk of deep SSIs (odds ratio 7.04, 95% confidence interval 2.38-20.9, P < .001) and wound complications (odds ratio 4.44, 95% confidence interval 1.02-19.2, P = .047). ConclusionPsoriasis is an inflammatory dermatologic condition that warrants increased pre-operative counseling, shared decision-making, and infectious precautions in the TKA population given the increased risk of wound complications and deep SSIs. Increased vigilance is required given the coexistence of certain comorbidities with this population, including depression, substance use disorder, smoking history, gastroesophageal reflux disease, and inflammatory bowel disease.