{"title":"\"Predicting Mortality Across Hospital Departments: A Machine Learning Approach for Various Healthcare-Associated Infections\".","authors":"Iman Heidari, Mohammad Mehdi Sepehri","doi":"10.1016/j.ajic.2025.09.004","DOIUrl":"https://doi.org/10.1016/j.ajic.2025.09.004","url":null,"abstract":"<p><strong>Background: </strong>Healthcare-associated infections (HAIs) pose a serious challenge to healthcare systems. Early identification of high-risk patients is crucial for optimizing resource allocation and preventive screening. This study develops and evaluates machine learning (ML) models to predict mortality in HAI patients across different hospital wards.</p><p><strong>Methods: </strong>This cross-sectional study analyzed a dataset of 4,346 HAI-diagnosed patients from a 700-bed hospital in Tehran, Iran, spanning March 2018 to January 2023. The dataset included demographics, clinical factors, and laboratory results. We applied four ML algorithms: multilayer perceptron (MLP), extreme gradient boosting (XGBoost), gradient boosting machines (GBM), and decision trees. Model performance was assessed using accuracy, precision, recall, F1 score, and area under the receiver operating characteristic curve (AUC-ROC).</p><p><strong>Results: </strong>Among all models, MLP achieved the highest accuracy (91%) and AUC-ROC (0.95), outperforming XGBoost, GBM, and decision trees. Learning curves and cross-validation confirmed its robustness and generalizability.</p><p><strong>Conclusion: </strong>ML techniques, particularly MLP, effectively predict mortality in HAI patients across hospital departments. By enabling targeted interventions and optimized resource allocation, MLP models can significantly improve HAI management and patient outcomes. Integrating these models into clinical decision support systems may enhance patient care and reduce the burden of HAIs.</p>","PeriodicalId":7621,"journal":{"name":"American journal of infection control","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Allison Wentland West, Erin Macsay, Kamie J Snure, William I Northern
{"title":"A phased approach to implementation of a Candida auris screening program in a large, acute care hospital system.","authors":"Allison Wentland West, Erin Macsay, Kamie J Snure, William I Northern","doi":"10.1016/j.ajic.2025.09.003","DOIUrl":"10.1016/j.ajic.2025.09.003","url":null,"abstract":"<p><p>A phased Candida auris screening program was implemented in a large acute care hospital system. This program used high-risk criteria as outlined by the Centers for Disease Control and Prevention to successfully identify C auris early in the hospital stay. Interdisciplinary collaboration enabled continuous quality improvement which improved screening processes for early detection and implementation of isolation precautions. Ultimately, safety for patients and staff was improved.</p>","PeriodicalId":7621,"journal":{"name":"American journal of infection control","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The impact of smartphone-based wound follow-up on surgical site infection detection: A quasi-experimental study.","authors":"Pourya Khani, Leili Rostamnia, Rostam Jalali, Behnam Darabi, Nader Salari","doi":"10.1016/j.ajic.2025.09.002","DOIUrl":"10.1016/j.ajic.2025.09.002","url":null,"abstract":"<p><strong>Background: </strong>Surgical site infections (SSIs) are common postoperative complications that are frequently missed or diagnosed late due to limited follow-up. This study evaluated a smartphone-based wound follow-up system for detecting SSIs after discharge.</p><p><strong>Methods: </strong>This quasi-experimental study selected 90 patients aged 18 to 70years undergoing general surgery at Taleghani hospital. The intervention group (n = 30) submitted postoperative wound photos via smartphone for immediate feedback; the control group (n = 60) received routine telephone follow-up at 1month. Data were analyzed in SPSS using independent t tests and logistic regression to compare SSI detection between groups.</p><p><strong>Results: </strong>The mean age was 41.6±13.0years, with no significant difference between groups. SSIs were detected in 5 patients in the smartphone group and 2 in the control group (P = .043). Both groups had primarily moderate infections, with one high-risk infection observed in the smartphone group only. The smartphone intervention was associated with significantly higher odds of SSI detection (odds ratio = 5.8; 95% CI, 1.05-31.92).</p><p><strong>Conclusions: </strong>Smartphone-based wound follow-up detected higher SSI rates and may enable earlier diagnosis. However, given the quasi-experimental design and small sample size, larger randomized multicenter studies are needed to confirm effectiveness and to evaluate longer-term patient outcomes.</p>","PeriodicalId":7621,"journal":{"name":"American journal of infection control","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Malinda Sykora, Arlene Ramsaran, Stephanie Blankenship, Andrew Hawrylak
{"title":"Reducing CAUTI incidence: A multimodal and multidisciplinary approach for improved prevention and patient outcomes.","authors":"Malinda Sykora, Arlene Ramsaran, Stephanie Blankenship, Andrew Hawrylak","doi":"10.1016/j.ajic.2025.08.037","DOIUrl":"10.1016/j.ajic.2025.08.037","url":null,"abstract":"<p><strong>Background: </strong>Catheter-associated urinary tract infections (CAUTIs) are common health care-associated infections and a key quality metric tied to patient safety. Although the standardized utilization ratio (SUR) declined, CAUTI rates remained above the target benchmark at a large academic trauma facility, prompting a multidisciplinary quality improvement initiative.</p><p><strong>Methods: </strong>A multidisciplinary team implemented a multimodal approach targeting indwelling urinary catheter practices. Interventions included standardized urine culture protocols, education on dependent loop prevention, 2 person insertion procedures, and monitoring indwelling urinary catheter order compliance. Data on 6 key metrics were tracked facility-wide from 2023 to 2025.</p><p><strong>Results: </strong>Urine culture card compliance improved from 15.4% to 100%. Indwelling urinary catheter order compliance rose from 50% to 85%, and 2 person insertion documentation reached 93%. The SUR dropped from 0.903 (2021) to 0.68 (2024), while CAUTI SIR decreased from 0.564 (2021) to 0.284 (2024). Current 2025 YTD SIR is 0.168.</p><p><strong>Discussion: </strong>Standardizing catheter care by implementing evidence-based interventions resulted in preventing CAUTI. To maintain these positive outcomes, leadership support, collaboration across disciplines, and ongoing education were crucial.</p><p><strong>Conclusions: </strong>A system-wide, multimodal CAUTI prevention strategy significantly reduced catheter use and infection rates. Continued focus on education and compliance tracking is essential to achieve and sustain zero harm.</p>","PeriodicalId":7621,"journal":{"name":"American journal of infection control","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Supporting Practical Approaches to Hand Hygiene Observation Collection.","authors":"Tanya Dvorak","doi":"10.1016/j.ajic.2025.08.040","DOIUrl":"https://doi.org/10.1016/j.ajic.2025.08.040","url":null,"abstract":"","PeriodicalId":7621,"journal":{"name":"American journal of infection control","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Monique T Barakat, Mohammad Noshad, Timothy Angelotti
{"title":"Pathogen Reduction in an Endoscopy Unit Using AI-Enabled Autonomous UV-C Disinfection.","authors":"Monique T Barakat, Mohammad Noshad, Timothy Angelotti","doi":"10.1016/j.ajic.2025.09.006","DOIUrl":"https://doi.org/10.1016/j.ajic.2025.09.006","url":null,"abstract":"<p><strong>Background: </strong>Bioburden on high-touch surfaces has been identified as a contributor to Healthcare-Associated Infections. Disinfection with UV-C light robots can minimize this bioburden, but targeted disinfection can be labor intensive. This study evaluated the effectiveness of wall-mounted autonomous and targeted UV-C disinfection device powered by Artificial Intelligence (AI) in reducing bioburden in a clinical setting.</p><p><strong>Methods: </strong>Two endoscopy rooms were evaluated in this study, a control room with standard institutional disinfection/cleaning measures and another with two autonomous UV-C (AUV) devices installed on opposite walls. To measure the potential impact on pathogenic bioburden levels, swab sampling was conducted on ten pre-selected high-touch surfaces in each room over a period of four weeks and analyzed for microbial colony counts by an independent laboratory.</p><p><strong>Results: </strong>Autonomous, targeted UV-C disinfection inactivated pathogens within 20-60 seconds from a distance of 6-8 feet. Longer UV-C exposure time were utilized to achieve a consistent level of pathogen inactivation across the room. The AUV room had a 99.7%, 84.3% and 93.8% bioburden reduction compared to the control room (weeks 1, 2 and 4). Cumulative bioburden was 93.3% lower than that measured in the Control room.</p><p><strong>Conclusions: </strong>These data demonstrate that this novel, autonomous and targeted UV-C disinfection approach is associated with effective surface decontamination and highlight the potential for this approach for broader use in healthcare settings.</p>","PeriodicalId":7621,"journal":{"name":"American journal of infection control","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xinli Shen, Jin Zhao, Songjun Ji, Lulu Jin, Xinling Pan
{"title":"Reply to \"Letter to editor: Influencing factors and benefits of repeated sampling for mycobacterial culture: A real-world study\".","authors":"Xinli Shen, Jin Zhao, Songjun Ji, Lulu Jin, Xinling Pan","doi":"10.1016/j.ajic.2025.09.005","DOIUrl":"10.1016/j.ajic.2025.09.005","url":null,"abstract":"","PeriodicalId":7621,"journal":{"name":"American journal of infection control","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145051524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Assessment of hospital resilience in response to medical surges during major emerging infectious diseases: A cross-sectional study from China.","authors":"Zi-Wei Xu, Rui Xie, Li Gui, Kang-Yao Cheng","doi":"10.1016/j.ajic.2025.08.031","DOIUrl":"10.1016/j.ajic.2025.08.031","url":null,"abstract":"<p><strong>Background: </strong>This study aimed to systematically assess hospital resilience of China and identify critical contributing elements using a score-based evaluation and network analysis approach.</p><p><strong>Methods: </strong>A cross-sectional study of 2,084 medical personnel was conducted between April and October 2024. Sociodemographic data were collected via questionnaire, and hospital resilience was assessed using a tool evaluating surge capacity during major infectious disease outbreaks. Network analysis identified core resilience components.</p><p><strong>Results: </strong>(1) Hospital resilience was moderate. Robustness scored highest (3.90), while recovery scored lowest (3.52). Key weaknesses were identified within the redundancy and resourcefulness dimensions, which had several low-scoring elements. The recovery dimension was the weakest overall, containing 3 specific low-scoring elements. This indicates a particular vulnerability in the hospital's ability to effectively rebound and restore services after a disruptive event. (2) Network analysis identified key elements with high strength centrality, including C61 service quality evaluation (r<sub>strength</sub> = 4.207), C33 patient diversion (r<sub>strength</sub> = 2.011), and C34 medical information transparency (r<sub>strength</sub> = 1.538), among others.</p><p><strong>Conclusions: </strong>Hospital resilience to major emerging infectious disease-related surges was moderate, with key gaps across resilience dimensions. Central network elements were identified, offering guidance for targeted improvements in preparedness and strengthening overall health care system resilience.</p>","PeriodicalId":7621,"journal":{"name":"American journal of infection control","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maxwell G Voorn, Geraldine M Tembo, Kelly E Rainey, Peter J Teska, Haley F Oliver
{"title":"Wiping cloth material choice significantly impacts the bactericidal efficacy of select disinfectant chemistries in environmental surface decontamination.","authors":"Maxwell G Voorn, Geraldine M Tembo, Kelly E Rainey, Peter J Teska, Haley F Oliver","doi":"10.1016/j.ajic.2025.08.036","DOIUrl":"10.1016/j.ajic.2025.08.036","url":null,"abstract":"<p><strong>Background: </strong>Manual surface wiping, a primary method in preventing hospital-acquired infections, varies significantly in its ability to eliminate bacteria and prevent cross-contamination.</p><p><strong>Methods: </strong>Four liquid-based cleaning and disinfecting formulations (hydrogen peroxide, ethoxylated alcohol, quaternary ammonium compounds (Quat and Quat2), and a water-based control) were evaluated for their bactericidal efficacy in combination with 3 different wiping materials: microfiber, polypropylene, and cotton. Each chemistry and wipe combination were evaluated for its ability to reduce microbial contamination on a hard, nonporous surface measuring 1 m. The bactericidal efficacy of each pairing was tested against 2 bacterial strains, Staphylococcus aureus (ATCC 6538) and Pseudomonas aeruginosa (ATCC 15442).</p><p><strong>Results: </strong>Wipes containing hydrogen peroxide exhibited the highest bactericidal efficacy among tested formulations, transferring the least bacteria across test surfaces. Polypropylene wipes consistently outperformed cotton, removing a greater proportion of bacteria from the inoculation site and transferring fewer to secondary areas. Wipes impregnated with ethoxylated alcohol, Quat, and Quat2 retained viable bacteria on the wipe, contributing to increased cross-contamination to other surfaces.</p><p><strong>Conclusions: </strong>Wiping material choice impacted the bactericidal efficacy of liquid chemistries in surface decontamination, underscoring the need to select effective material-chemistry combinations to reduce viable bacteria and limit cross-contamination.</p>","PeriodicalId":7621,"journal":{"name":"American journal of infection control","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nantanit van Gulik, Wendy Calder, Philippa Blencowe, Alexandra Mikus-Cunningham, Roslyn Carmichael, Stephane Bouchoucha, Tejashree Kangutkar, Julie Considine
{"title":"Staff perceptions of their roles in infection prevention and control in residential aged care homes: A qualitative study.","authors":"Nantanit van Gulik, Wendy Calder, Philippa Blencowe, Alexandra Mikus-Cunningham, Roslyn Carmichael, Stephane Bouchoucha, Tejashree Kangutkar, Julie Considine","doi":"10.1016/j.ajic.2025.09.001","DOIUrl":"10.1016/j.ajic.2025.09.001","url":null,"abstract":"<p><strong>Background: </strong>Older people who live in residential aged care homes (RACHs) are particularly vulnerable to infections. Without staff commitment and engagement, even the most well-designed policies and guidelines may fail to achieve infection prevention and control (IPAC) effectiveness. The aim of this study was to examine staff perceptions of their roles in IPAC in RACHs.</p><p><strong>Methods: </strong>A qualitative descriptive study using semistructured interviews with 21 direct care and support staff was conducted on 2 RACHs in Melbourne, Australia. Participants were interviewed from May to October 2024. Transcribed audio-recordings of interviews were analyzed using inductive thematic analysis.</p><p><strong>Results: </strong>Both direct care and support staff perceived their primary role in IPAC as providing both physical safety and emotional support to older people. While they recognized the importance of routine and outbreak-related IPAC practices, they identified key barriers such as older people's cognitive impairment, home-like environments, and staffing challenges. Most participants felt supported by organizational training but emphasized the need for ongoing IPAC education regardless of role.</p><p><strong>Conclusions: </strong>The findings highlight the importance of tailored IPAC training, including communication strategies for supporting older people with cognitive impairment, along with team collaboration and workforce retention measures to sustain effective IPAC in RACHs.</p>","PeriodicalId":7621,"journal":{"name":"American journal of infection control","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145008046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}