Publications by authors named "Lucy E Wilson"

2019–2020 at 6 US sites. Among 159 CRE cases in children (median age 5 years), CRE was isolated from urine for 131 (82.4%) and blood from 20 (12.

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  • The study investigated the characteristics of healthcare personnel (HCP) who tested positive for SARS-CoV-2 from April 2020 to December 2021 to inform protective measures for this workforce.
  • Over 7,500 case-HCP were analyzed, revealing that a significant proportion of certified nursing assistants, medical assistants, and home healthcare workers identified as non-Hispanic Black or Hispanic, with many residing in areas of high social vulnerability.
  • Findings suggest that tailored infection prevention strategies should be developed according to HCP roles and social vulnerability to effectively reduce the risk of SARS-CoV-2 infection.
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Background: Understanding the epidemiology of carbapenem-resistant A. baumannii complex (CRAB) and the patients impacted is an important step toward informing better infection prevention and control practices and improving public health response.

Methods: Active, population-based surveillance was conducted for CRAB in 9 U.

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  • The study aimed to identify predictors of multiple recurrent Clostridioides difficile infections (mrCDI) in adults at the time they first present with an initial CDI (iCDI).
  • Of 18,829 patients with iCDI, 4.7% developed mrCDI, with older age, recent hospitalization, chronic hemodialysis, and nitrofurantoin use being significant risk factors.
  • Findings suggest that patients at higher risk for mrCDI may benefit from early interventions to prevent further recurrences, potentially improving clinical management strategies.
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We conducted a single-center study at a free community testing site in Baltimore City to assess the accuracy of self-performed rapid antigen tests (RATs) for COVID-19. Self-administered BinaxNOW RATs were compared with clinician-performed RATs and against a reference lab molecular testing as the gold standard. Of the 953 participants, 14.

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Background: We described changes in 2016─2020 carbapenem-resistant Enterobacterales (CRE) incidence rates in 7 US sites that conduct population-based CRE surveillance.

Methods: An incident CRE case was defined as the first isolation of , spp., or spp.

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  • * A case-control study involving 3,647 healthcare personnel showed that bivalent vaccine effectiveness (VE) was about 34.1%, with the highest effectiveness (54.8%) observed shortly after administration, declining as time passed.
  • * The study highlights that while bivalent doses initially provide substantial protection against COVID-19, their effectiveness significantly wanes after two months, suggesting the need for ongoing monitoring and potential updates to vaccination strategies.
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  • Protection against COVID-19 is crucial for healthcare workers, especially as vaccine effectiveness has decreased with the rise of the Omicron variant.
  • A study evaluated the effectiveness of a monovalent mRNA booster dose from October 2021 to June 2022, finding that its effectiveness dropped significantly from 86% during Delta prevalence to 65% during Omicron prevalence.
  • The results indicated that while a booster dose provides strong protection initially, its effectiveness wanes over time, dropping to 32% at least 120 days after vaccination, highlighting the importance of staying current with COVID-19 vaccinations.
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  • Most pediatric sepsis studies in the US rely on administrative data or focus on ICUs; this study reviews medical records from 10 states to better understand sepsis in children and young adults.
  • Out of 736 patients, 60.1% had underlying health conditions, with a majority experiencing community-onset sepsis, often associated with healthcare settings.
  • Age-specific variations were observed, indicating differing underlying conditions and risk factors for sepsis, suggesting a need for targeted awareness and prevention strategies among outpatient healthcare providers.
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  • The CDC's Emerging Infections Program studied carbapenem-resistant Pseudomonas aeruginosa (CRPA) in the U.S. from 2016 to 2018 through population and laboratory surveillance, collecting 1,019 isolates for analysis.
  • The study found high genetic diversity among the strains, with 336 different sequence types, and the majority (87.1%) of isolates exhibited mutations in the porin OprD, linked to carbapenem resistance.
  • While only a small percentage contained carbapenemase genes, many had non-carbapenemase β-lactamase genes, indicating that other resistance mechanisms also play a significant role in the spread of CRPA in the U.S.
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Healthcare personnel with severe acute respiratory coronavirus virus 2 (SARS-CoV-2) infection were interviewed to describe activities and practices in and outside the workplace. Among 2,625 healthcare personnel, workplace-related factors that may increase infection risk were more common among nursing-home personnel than hospital personnel, whereas selected factors outside the workplace were more common among hospital personnel.

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Importance: Controlling antimicrobial resistance in health care is a public health priority, although data describing antimicrobial use in US nursing homes are limited.

Objective: To measure the prevalence of antimicrobial use and describe antimicrobial classes and common indications among nursing home residents.

Design, Setting, And Participants: Cross-sectional, 1-day point-prevalence surveys of antimicrobial use performed between April 2017 and October 2017, last survey date October 31, 2017, and including 15 276 residents present on the survey date in 161 randomly selected nursing homes from selected counties of 10 Emerging Infections Program (EIP) states.

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Importance: Hospital antimicrobial consumption data are widely available; however, large-scale assessments of the quality of antimicrobial use in US hospitals are limited.

Objective: To evaluate the appropriateness of antimicrobial use for hospitalized patients treated for community-acquired pneumonia (CAP) or urinary tract infection (UTI) present at admission or for patients who had received fluoroquinolone or intravenous vancomycin treatment.

Design, Setting, And Participants: This cross-sectional study included data from a prevalence survey of hospitalized patients in 10 Emerging Infections Program sites.

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Background: Published bundles to reduce Clostridioides difficile Infection (CDI) frequently lack information on compliance with individual elements. We piloted a computerized clinical decision support-based intervention bundle and conducted detailed evaluation of several intervention-related measures.

Methods: A quasi-experimental study of a bundled intervention was performed at 2 acute care community hospitals in Maryland.

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Heteroresistance is a form of antibiotic resistance where a bacterial strain is comprised of a minor resistant subpopulation and a majority susceptible subpopulation. We showed previously that colistin heteroresistance can mediate the failure of colistin therapy in an infection model, even for isolates designated susceptible by clinical diagnostics. We sought to characterize the extent of colistin heteroresistance among the highly drug-resistant carbapenem-resistant (CRE).

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In 2014, trained healthcare provider capacity was insufficient to deliver care to an estimated 70 000 persons in Maryland with chronic hepatitis C virus (HCV) infection. The goal of Maryland Community Based Programs to Test and Cure Hepatitis C, a public health implementation project, was to improve HCV treatment access by expanding the workforce. Sharing the Cure (STC) was a package of services deployed 10/1/14-9/30/18 that included enhanced information technology and public health infrastructure, primary care provider training and practice transformation.

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Importance: Current information on the characteristics of patients who develop sepsis may help in identifying opportunities to improve outcomes. Most recent studies of sepsis epidemiology have focused on changes in incidence or have used administrative data sets that provided limited patient-level data.

Objective: To describe sepsis epidemiology in adults.

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Background: In the 2011 US hospital prevalence survey of healthcare-associated infections and antimicrobial use 50% of patients received antimicrobial medications on the survey date or day before. More hospitals have since established antimicrobial stewardship programs. We repeated the survey in 2015 to determine antimicrobial use prevalence and describe changes since 2011.

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Acute change in mental status (ACMS), defined by the Confusion Assessment Method, is used to identify infections in nursing home residents. A medical record review revealed that none of 15,276 residents had an ACMS documented. Using the revised McGeer criteria with a possible ACMS definition, we identified 296 residents and 21 additional infections.

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Background: Efforts to prevent infection continue to expand across the health care spectrum in the United States. Whether these efforts are reducing the national burden of infection is unclear.

Methods: The Emerging Infections Program identified cases of infection (stool specimens positive for in a person ≥1 year of age with no positive test in the previous 8 weeks) in 10 U.

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Article Synopsis
  • This study analyzed antibiotic use for urinary tract infections (UTIs) among nursing home residents in the U.S., based on a 2017 survey of 15,276 residents from 161 facilities across 10 states.
  • A total of 407 residents received 424 antibiotics for UTI, with a prevalence rate of 2.66 per 100 residents, varying significantly among nursing homes.
  • Notably, a quarter of these prescriptions were for UTI prophylaxis with an average duration of 111 days, despite limited supporting evidence, and fluoroquinolones were the most commonly used type of antibiotic, raising concerns about potential adverse effects in older patients.
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A Pseudomonas aeruginosa outbreak was investigated in a neonatal intensive care unit that had experienced a prior similar outbreak. The 8 cases identified included 2 deaths. An investigation found the cause of the outbreak: tap water from contaminated hospital plumbing which was used for humidifier reservoirs, neonatal bathing, and nutritional preparation.

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Background: A point-prevalence survey that was conducted in the United States in 2011 showed that 4% of hospitalized patients had a health care-associated infection. We repeated the survey in 2015 to assess changes in the prevalence of health care-associated infections during a period of national attention to the prevention of such infections.

Methods: At Emerging Infections Program sites in 10 states, we recruited up to 25 hospitals in each site area, prioritizing hospitals that had participated in the 2011 survey.

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During 2011-2015, the adjusted long-term-care facility onset Clostridium difficile infection incidence rate in persons aged ≥65 years decreased annually by 17.45% (95% confidence interval, 14.53%-20.

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