Journal ArticleMicroorganisms · November 2024
Untreated infective endocarditis (IE) is uniformly fatal. The practice of combination antibiotic therapy for IE is recommended by treatment guidelines but largely unsupported by high-quality evidence. This study aimed to assess the efficacy of combination ...
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Journal ArticleJ Antimicrob Chemother · September 3, 2024
OBJECTIVES: Escherichia coli can cause infections in the urinary tract and in normally sterile body sites leading to invasive E. coli disease (IED), including bacteraemia and sepsis, with older populations at increased risk. We aimed to estimate the theore ...
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Journal ArticleClin Infect Dis · July 19, 2024
BACKGROUND: Equitable representation of members from historically marginalized groups is important in clinical trials, which inform standards of care. The goal of this study was to characterize the demographics and proportional subgroup reporting and repre ...
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Journal ArticleClin Infect Dis · June 14, 2024
The association between persistent gram-negative bloodstream infection (GN-BSI), or ongoing positive cultures, and recurrent GN-BSI has not been investigated. Among 992 adults, persistent GN-BSI was associated with increased recurrent GN-BSI with the same ...
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Journal ArticleJ Infect Dis · May 15, 2024
BACKGROUND: Clinical outcomes in bacterial bloodstream infections (BSIs) are influenced by bacterial species, host immunity, and antibiotic therapy. The mechanisms by which such factors influence outcomes are poorly understood. We aimed to identify bacteri ...
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Journal ArticlePNAS Nexus · May 2024
Methicillin-resistant Staphylococcus aureus (MRSA) bacteremia is a common and life-threatening infection that imposes up to 30% mortality even when appropriate therapy is used. Despite in vitro efficacy determined by minimum inhibitory concentration breakp ...
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Journal ArticleJAMA Netw Open · February 5, 2024
IMPORTANCE: Staphylococcus aureus is the leading cause of death due to bacterial bloodstream infection. Female sex has been identified as a risk factor for mortality in S aureus bacteremia (SAB) in some studies, but not in others. OBJECTIVE: To determine w ...
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Journal ArticleProc Natl Acad Sci U S A · January 16, 2024
Gram-negative bacterial bloodstream infections (GNB-BSI) are common and frequently lethal. Despite appropriate antibiotic treatment, relapse of GNB-BSI with the same bacterial strain is common and associated with poor clinical outcomes and high healthcare ...
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Journal ArticlePLoS One · 2024
Lyme disease is a spatially heterogeneous tick-borne infection, with approximately 85% of US cases concentrated in the mid-Atlantic and northeastern states. Surveillance for Lyme disease and its causative agent, including public health case reporting and e ...
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Journal ArticlePLoS One · 2024
The innate immune system eliminates bloodstream pathogens such as Escherichia coli in part through complement protein deposition and subsequent bacterial death (i.e., "serum killing"). Some E. coli strains have developed mechanisms to resist serum killing, ...
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Journal ArticleClin Infect Dis · November 11, 2023
BACKGROUND: Hematogenous vertebral osteomyelitis (HVOM) is an incompletely understood complication of Staphylococcus aureus bacteremia (SAB). METHODS: Eligible SAB patients with and without HVOM were prospectively enrolled from 1995 through 2019 at Duke Un ...
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Journal ArticleNursing open · November 2023
AimResearch suggests that early access to quality care is essential to improving bacteraemia outcomes and reducing the risk of developing sepsis because it allows for early intervention. Currently, there are limited data regarding the facilitators ...
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Journal ArticleClin Infect Dis · October 16, 2023
The Antibacterial Resistance Leadership Group (ARLG) has prioritized infections caused by gram-positive bacteria as one of its core areas of emphasis. The ARLG Gram-positive Committee has focused on studies responding to 3 main identified research prioriti ...
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Journal ArticleClin Infect Dis · October 13, 2023
BACKGROUND: Despite being the leading cause of mortality from bloodstream infections worldwide, little is known about regional variation in treatment practices for Staphylococcus aureus bacteremia (SAB). The aim of this study was to identify global variati ...
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Journal ArticleClin Microbiol Infect · September 2023
OBJECTIVES: The association of biological female sex with outcome in patients with Staphylococcus aureus bacteraemia remains unresolved. The aim of this study was to determine the independent association of female sex with management and mortality in patie ...
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Journal ArticleJ Clin Microbiol · July 20, 2023
Escherichia coli sequence type 131 (ST131) is a globally dominant multidrug-resistant clone, although its clinical impact on patients with bloodstream infection (BSI) is incompletely understood. This study aims to further define the risk factors, clinical ...
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Journal ArticleNat Comput Sci · July 2023
Resolving chromatin-remodeling-linked gene expression changes at cell-type resolution is important for understanding disease states. Here we describe MAGICAL (Multiome Accessibility Gene Integration Calling and Looping), a hierarchical Bayesian approach th ...
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Journal ArticleNursing open · May 2023
AimWe explored patient pre-hospital delays in seeking care for symptoms of bacteremia and sepsis.DesignA qualitative descriptive study.MethodsIn January 2021, we recruited a convenience sample of four men and six women who were f ...
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Journal ArticleClin Infect Dis · April 3, 2023
BACKGROUND: Staphylococcus aureus bacteremia (SAB) disproportionately affects Black patients. The reasons for this disparity are unclear. METHODS: We evaluated a prospectively ascertained cohort of patients with SAB from 1995 to 2020. Clinical characterist ...
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Journal ArticleClin Infect Dis · February 8, 2023
BACKGROUND: The diagnosis of infective endocarditis (IE) can be difficult, particularly if blood cultures fail to yield a pathogen. This study evaluates the potential utility of microbial cell-free DNA (mcfDNA) as a tool to identify the microbial etiology ...
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Journal ArticleClin Infect Dis · February 8, 2023
BACKGROUND: The causes and clinical characteristics of recurrent gram-negative bacterial bloodstream infections (GNB-BSI) are poorly understood. METHODS: We used a cohort of patients with GNB-BSI to identify clinical characteristics, microbiology, and risk ...
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Journal ArticleTranspl Infect Dis · December 2022
BACKGROUND: Outcomes from Gram-negative bacteremia (GNB) in solid organ transplant (SOT) recipients are poorly understood. METHODS: This is a single center prospective cohort study comparing the clinical characteristics and outcomes of SOT recipients with ...
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Journal ArticleJAMA Netw Open · September 1, 2022
IMPORTANCE: Obtaining follow-up blood cultures (FUBCs) in patients with Staphylococcus aureus bloodstream infection (BSI) is standard practice, although its utility in patients with gram-negative bacterial BSI (GN-BSI) is unclear. OBJECTIVE: To examine whe ...
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Journal ArticleClin Infect Dis · June 10, 2022
BACKGROUND: Microbial cell-free DNA (mcfDNA) sequencing of plasma can identify the presence of a pathogen in a host. In this study, we evaluated the duration of pathogen detection by mcfDNA sequencing vs conventional blood culture in patients with bacterem ...
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Journal ArticleiScience · April 2022
Mathematical models have many applications in infectious diseases: epidemiologists use them to forecast outbreaks and design containment strategies; systems biologists use them to study complex processes sustaining pathogens, from the metabolic networks em ...
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Journal ArticleAm J Kidney Dis · March 2022
RATIONALE & OBJECTIVE: Staphylococcus aureus (Saureus) bacteremia (SAB) is associated with morbidity and mortality in patients receiving maintenance hemodialysis (HD). We evaluated changes in clinical and bacterial characteristics, and their associations w ...
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Journal ArticleOpen Forum Infect Dis · February 2022
BACKGROUND: We previously conducted a concept elicitation study on the impact of Staphylococcus aureus and gram-negative bacterial bloodstream infections (SAB/GNB) on health-related quality of life (HRQoL) from the patient's perspective and found significa ...
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Journal ArticleTranspl Infect Dis · December 2021
INTRODUCTION: Outcomes from Staphylococcus aureus bacteremia (SAB) in solid organ transplant (SOT) recipients are poorly understood. METHODS: This is a prospective cohort study comparing the bacterial genotype and clinical outcomes of SAB among SOT and non ...
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Journal ArticleJ Med Entomol · July 16, 2021
Lyme disease is the most common tick-borne disease in North America. Though human infection is mostly transmitted in a limited geography, the range has expanded in recent years. One notable area of recent expansion is in the mountainous region of southwest ...
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Journal ArticleClin Infect Dis · July 15, 2021
BACKGROUND: Although Staphylococcus aureus and gram-negative bacterial bloodstream infections (SAB/GNB) cause substantial morbidity, little is known regarding patient perceptions' of their impact on quality of life (QOL). Guidance for assessing QOL and dis ...
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Journal ArticleClin Infect Dis · June 1, 2021
BACKGROUND: To understand the clinical, bacterial, and host characteristics associated with recurrent Staphylococcus aureus bacteremia (R-SAB), patients with R-SAB were compared to contemporaneous patients with a single episode of SAB (S-SAB). METHODS: All ...
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Journal ArticleAm J Transplant · June 2021
We undertook a prospective, matched cohort study of patients with Staphylococcus aureus bacteremia (SAB) and gram-negative bacteremia (GNB) to compare the characteristics, outcomes, and chemokine and cytokine response in transplant recipients to immunocomp ...
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Journal ArticleProc Natl Acad Sci U S A · March 9, 2021
Persistent methicillin-resistant Staphylococcus aureus (MRSA) bacteremia is life threatening and occurs in up to 30% of MRSA bacteremia cases despite appropriate antimicrobial therapy. Isolates of MRSA that cause antibiotic-persistent methicillin-resistant ...
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Journal ArticleEur J Clin Microbiol Infect Dis · November 2020
The complement system is a vital component of the innate immune system, though its role in bacteremia is poorly understood. We present complement levels in Staphylococcus aureus bacteremia (SAB) and Gram-negative bacteremia (GNB) and describe observed asso ...
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Journal ArticleJ Clin Microbiol · August 24, 2020
Enterobacter aerogenes was recently renamed Klebsiella aerogenes This study aimed to identify differences in clinical characteristics, outcomes, and bacterial genetics among patients with K. aerogenes versus Enterobacter species bloodstream infections (BSI ...
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Journal ArticleClin Microbiol Infect · July 2020
OBJECTIVES: The role of follow-up blood cultures (FUBCs) in the management of Gram-negative bacteraemia (GNB) is poorly understood. We aimed to determine the utility of FUBCs in identifying patients with increased mortality risk. METHODS: An observational ...
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Journal ArticleOpen Forum Infect Dis · May 2020
Cefiderocol is a novel catechol siderophore cephalosporin antibiotic developed to treat resistant gram-negative infections. We describe its successful use as rescue therapy, combined with surgical debridement, to treat a patient with osteomyelitis due to e ...
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Journal ArticleClin Transl Immunology · 2020
OBJECTIVES: To identify risk stratification biomarkers to enrich for the subset of Staphylococcus aureus bacteraemia patients who develop deep-seated tissue infections with high morbidity and mortality to guide clinical trial enrolment and clinical managem ...
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Journal ArticleClin Infect Dis · November 13, 2019
BACKGROUND: We conducted a longitudinal study to evaluate changes in the clinical presentation and epidemiology of Staphylococcus aureus bacteremia (SAB) in an academic, US medical center. METHODS: Consecutive patients with monomicrobial SAB were enrolled ...
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Journal ArticleProc Natl Acad Sci U S A · October 1, 2019
The role of the host in development of persistent methicillin-resistant Staphylococcus aureus (MRSA) bacteremia is not well understood. A cohort of prospectively enrolled patients with persistent methicillin-resistant S. aureus bacteremia (PB) and resolvin ...
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Journal ArticleClin Infect Dis · April 24, 2019
BACKGROUND: Staphylococcus aureus is a leading cause of bacteremia, yet there remains a significant knowledge gap in the identification of relevant biomarkers that predict clinical outcomes. Heterogeneity in the host response to invasive S. aureus infectio ...
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Journal ArticleOpen Forum Infect Dis · April 2019
BACKGROUND: Staphylococcus aureus is a leading global cause of bacteremia that can cause invasive tissue infections with high morbidity and mortality despite appropriate antibiotic therapy. Clinicians lack sufficient tools to rapidly identify patients with ...
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Journal ArticleClin Transl Immunology · 2019
OBJECTIVE: To understand the relationships of Staphylococcus aureus (SA) bacteremic pneumonia (SABP) outcome with patient-specific and SA-specific variables. METHODS: We analysed SA bloodstream isolates and matching sera in SABP patients by sequencing SA i ...
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Journal ArticlePLoS Genet · October 2018
The role of host genetic variation in the development of complicated Staphylococcus aureus bacteremia (SAB) is poorly understood. We used whole exome sequencing (WES) to examine the cumulative effect of coding variants in each gene on risk of complicated S ...
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Journal ArticleAntimicrob Agents Chemother · June 2017
The impact of bacterial species on outcome in bloodstream infections (BSI) is incompletely understood. We evaluated the impact of bacterial species on BSI mortality, with adjustment for patient, bacterial, and treatment factors. From 2002 to 2015, all adul ...
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Journal ArticleAntimicrob Agents Chemother · March 2017
The clinical and economic impacts of bloodstream infections (BSI) due to multidrug-resistant (MDR) Gram-negative bacteria are incompletely understood. From 2009 to 2015, all adult inpatients with Gram-negative BSI at our institution were prospectively enro ...
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Journal ArticleGenes Immun · March 2017
The incidence of Staphylococcus aureus bacteremia (SAB) is significantly higher in African American (AA) than in European-descended populations. We used admixture mapping (AM) to test the hypothesis that genomic variations with different frequencies in Eur ...
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Journal ArticleOpen Forum Infect Dis · 2017
BACKGROUND: Most Lyme disease cases in the Midwestern United States are reported in Minnesota and Wisconsin. In recent years, however, a widening geographic extent of Lyme disease has been noted with evidence of expansion eastwards into Michigan and neighb ...
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Journal ArticleOpen Forum Infect Dis · 2017
BACKGROUND: The species-specific risk of cardiac device-related infection (CDRI) among bacteremic patients is incompletely understood. METHODS: We conducted a prospective cohort study of hospitalized patients from October 2002 to December 2014 with a cardi ...
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Journal ArticleOpen Forum Infect Dis · September 2016
We report the case of a 60-year-old man with septic shock due to Capnocytophaga canimorsus that was diagnosed in 24 hours by a novel whole-genome next-generation sequencing assay. This technology shows great promise in identifying fastidious pathogens, and ...
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Journal ArticleJ Infect · March 2016
BACKGROUND: Phenol-soluble modulins (PSM) are amphipathic proteins produced by Staphylococcus aureus that promote virulence, inflammatory response, and biofilm formation. We previously showed that MRSA isolates from soft tissue infection (SSTI) produced si ...
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Journal ArticleOpen Forum Infect Dis · January 2016
Whole-genome analysis was applied to investigate atypical point-source transmission of 2 invasive group A streptococcal (GAS) infections. Isolates were serotype M4, ST39, and genetically indistinguishable. Comparison with MGAS10750 revealed nonsynonymous p ...
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Journal ArticleOpen Forum Infect Dis · December 2015
Background. The majority of Lyme disease cases in the United States are acquired on the east coast between northern Virginia and New England. In recent years the geographic extent of Lyme disease has been expanding, raising the prospect of Lyme disease be ...
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Journal ArticleClin Infect Dis · November 1, 2015
BACKGROUND: Lyme disease is diagnosed by 2-tiered serologic testing in patients with a compatible clinical illness, but the significance of positive test results in low-prevalence regions has not been investigated. METHODS: We reviewed the medical records ...
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Journal ArticleJ Clin Microbiol · January 2015
Alpha-toxin is a major Staphylococcus aureus virulence factor. This study evaluated potential relationships between in vitro alpha-toxin expression of S. aureus bloodstream isolates, anti-alpha-toxin antibody in serum of patients with S. aureus bacteremia ...
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Journal ArticlePLoS One · 2015
BACKGROUND: Nonsynonymous single nucleotide polymorphisms (SNPs) in fibronectin binding protein A (fnbA) of Staphylococcus aureus are associated with cardiac device infections. However, the role of fnbA SNPs in S. aureus arthroplasty infection is unknown. ...
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Journal ArticleClin Infect Dis · September 15, 2014
BACKGROUND: The incidence of community-onset (CO) methicillin-resistant Staphylococcus aureus (MRSA) bacteremia rose from the late 1990s through the 2000s. However, hospital-onset (HO) MRSA rates have recently declined in the United States and Europe. METH ...
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Journal ArticleBMC Infect Dis · February 13, 2014
BACKGROUND: Humans vary in their susceptibility to acquiring Staphylococcus aureus infection, and research suggests that there is a genetic basis for this variability. Several recent genome-wide association studies (GWAS) have identified variants that may ...
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Journal ArticleJ Clin Microbiol · March 2012
The impact of Panton-Valentine leukocidin (PVL) on the outcome in Staphylococcus aureus pneumonia is controversial. We genotyped S. aureus isolates from patients with hospital-acquired pneumonia (HAP) enrolled in two registrational multinational clinical t ...
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Journal ArticlePLoS One · 2012
The impact of Panton-Valentine leukocidin (PVL) on the severity of complicated skin and skin structure infections (cSSSI) caused by Staphylococcus aureus is controversial. We evaluated potential associations between clinical outcome and PVL presence in bot ...
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Journal ArticleJ Clin Microbiol · April 2011
Transmission of methicillin-resistant Staphylococcus aureus (MRSA) between humans and animals is increasingly recognized. We newly document that the transmission of MRSA between human and hamster is possible. ...
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Journal ArticlePLoS One · 2011
Methicillin-resistant Staphylococcus aureus (MRSA) is a significant pathogen in both human and veterinary medicine. The importance of companion animals as reservoirs of human infections is currently unknown. The companion animals of 49 MRSA-infected outpat ...
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