Journal ArticlePharmacoecon Open · December 10, 2025
BACKGROUND: Pneumococcal disease can significantly reduce quality of life (QoL). Health utilities are commonly used to assess QoL burden and calculate quality-adjusted life years (QALYs), which are critical inputs in cost-utility analyses (CUAs) to evaluat ...
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Journal ArticleAnn Surg · December 1, 2025
OBJECTIVE: To sought comprehensively profile tissue and cyst fluid in patients with benign, precancerous, and cancerous conditions of the pancreas to characterize the intrinsic pancreatic microbiome. BACKGROUND: Small studies in pancreatic ductal adenocarc ...
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Journal ArticleBlood Adv · November 11, 2025
Tisagenlecleucel (tisa-cel) is a CD19-directed chimeric antigen receptor T-cell therapy for relapsed/refractory precursor B-cell acute lymphoblastic leukemia (R/R B-ALL). We report infectious complications for 100 days (D100) following tisa-cel therapy in ...
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Journal ArticleJCI Insight · October 22, 2025
BACKGROUNDUnderstanding age-associated differences in acute and memory adaptive immunity to SARS-CoV-2 and how they contribute to more favorable outcomes in children is critically important.METHODSWe evaluated SARS-CoV-2-specific T cell, B cell, and antibo ...
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Journal ArticleJ Infect Dis · October 15, 2025
BACKGROUND: The gut microbiota has been implicated in driving coronavirus disease 2019 (COVID-19) disease severity, but the underlying mechanisms remain unknown. We investigated the relationship between the gut microbiota and development of symptomatic COV ...
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Journal ArticlePharmacoeconomics · September 2025
BACKGROUND: Pneumococcal disease can significantly impact the quality of life (QoL) of children. Health utilities are used to measure the disease burden and calculate quality-adjusted life year (QALY) estimates. These estimates provide critical inputs in e ...
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Journal ArticleInt J Syst Evol Microbiol · July 2025
Twelve strains of a novel Corynebacterium species were cultured from human respiratory samples collected in the USA and Botswana. Five strains underwent detailed phenotypic and chemotaxonomic characterization, while all 12 strains were included in phylogen ...
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Journal ArticlemSphere · June 25, 2025
Corynebacterium species, integral to the healthy human upper respiratory tract (URT) microbiota, remain underexplored in microbial genomics for their potential to promote respiratory health and exclude pathobionts. This genomic study investigated the diver ...
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Journal ArticleNat Commun · June 4, 2025
The mechanisms by which respiratory viruses predispose to secondary bacterial infections remain poorly characterized. Using 2,409 nasopharyngeal swabs from 300 infants enrolled in a prospective cohort study in Botswana, we perform a detailed analysis of fa ...
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Journal ArticleNat Commun · March 10, 2025
Age is among the strongest risk factors for severe outcomes from SARS-CoV-2 infection. Here we describe upper respiratory tract (URT) and peripheral blood transcriptomes of 202 participants (age range of 1 week to 83 years), including 137 non-hospitalized ...
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Journal ArticlemSystems · December 17, 2024
UNLABELLED: Corynebacterium species are globally ubiquitous in human nasal microbiota across the lifespan. Moreover, nasal microbiota profiles typified by higher relative abundances of Corynebacterium are often positively associated with health. Among the ...
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Journal ArticleOpen Forum Infect Dis · December 2024
BACKGROUND: Respiratory syncytial virus (RSV) is the leading cause of acute lower respiratory illness among young children. Human immunodeficiency virus (HIV)-exposed, uninfected (HEU) children experience a higher burden of RSV disease and have immune abno ...
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Journal ArticlebioRxiv · November 21, 2024
Strains of two novel Corynebacterium species were cultured from samples of human nostrils and skin collected in the United States and Botswana. These strains demonstrated growth on Columbia Colistin-Nalidixic Acid agar with 5% sheep blood and in liquid med ...
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Journal ArticleVaccines (Basel) · September 12, 2024
This study aimed to evaluate the cost-effectiveness of routine childhood immunization with the 20-valent pneumococcal conjugate vaccine (PCV20) in a four-dose regimen (3 + 1 schedule) versus the 15-valent PCV (PCV15/V114) in a three-dose regimen (2 + 1) in ...
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Journal ArticleExpert Rev Anti Infect Ther · July 2024
INTRODUCTION: The microbiome is known to have a substantial impact on human health and disease. However, the impacts of the microbiome on immune system development, susceptibility to infectious diseases, and vaccine-elicited immune responses are emerging a ...
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Journal ArticlePediatrics · June 1, 2024
BACKGROUND AND OBJECTIVES: The messenger RNA (mRNA)-based coronavirus disease 2019 vaccines approved for use in children <5 years of age have different antigen doses and administration schedules that could affect vaccine immunogenicity and effectiveness. W ...
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Journal ArticleJ Pediatric Infect Dis Soc · February 28, 2024
The microbial communities that inhabit our bodies have been increasingly linked to host physiology and pathophysiology. This microbiome, through its role in colonization resistance, influences the risk of infections after transplantation, including those c ...
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Journal ArticleOper Neurosurg · February 1, 2024
BACKGROUND AND OBJECTIVES: Achieving spinopelvic realignment during adult spinal deformity (ASD) surgery does not always produce ideal outcomes. Little is known whether compensation in lower extremities (LEs) plays a role in this disassociation. The object ...
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Journal ArticlePediatrics · February 1, 2024
Pediatric infectious diseases (PID) physicians prevent and treat childhood infections through clinical care, research, public health, education, antimicrobial stewardship, and infection prevention. This article is part of an American Board of Pediatrics Fo ...
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Journal ArticleGut Microbes · 2024
Antibiotic resistance is a global threat driven primarily by antibiotic use. We evaluated the effects of antibiotic exposures on the gut microbiomes and resistomes of children at high risk of colonization by antibiotic-resistant bacteria. We performed shot ...
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Journal ArticlePLoS One · 2024
BACKGROUND: In 2012, Botswana introduced 13-valent pneumococcal conjugate vaccine (PCV-13) to its childhood immunization program in a 3+0 schedule, achieving coverage rates of above 90% by 2014. In other settings, PCV introduction has been followed by an i ...
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Journal ArticleJ Clin Pharmacol · December 2023
Imipenem/cilastatin/relebactam is approved for the treatment of serious gram-negative bacterial infections in adults. This study assessed the pharmacokinetics (PK), safety, and tolerability of a single dose of imipenem/cilastatin/relebactam (with a fixed 2 ...
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Journal ArticlePediatr Blood Cancer · December 2023
BACKGROUND: The healthcare costs of patients who receive hematopoietic stem cell transplantation (HSCT) are substantial. At the same time, the increasing use of pediatric HSCT leaves more caregivers of pediatric HSCT recipients at risk for financial burden ...
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Journal ArticleGut Pathog · November 16, 2023
BACKGROUND: Gut dysbiosis contributes to the high risk of bloodstream infection (BSI) among premature infants. Most prior studies of the premature infant gut microbiota were conducted in Western countries and prior to development of current tools for strai ...
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Journal ArticleCurr Opin Infect Dis · October 1, 2023
PURPOSE OF REVIEW: In this review, we discuss recent research that has furthered our understanding of microbiome development during childhood, the role of the microbiome in infections during this life stage, and emerging opportunities for microbiome-based ...
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Journal ArticlemBio · August 31, 2023
Acute respiratory infections are the most frequent infections across the lifespan and are the leading infectious cause of death among children globally. Bacterial respiratory infections are routinely treated with antibiotics, nearly all of which are derive ...
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Journal ArticleNature · August 2023
A growing body of literature suggests that alterations in the human microbiome are causative of disease initiation and progression. Aykut et al. present data supporting the argument that alterations in the gut fungal microbiome (the “mycobiome”), along wit ...
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Journal ArticlePediatr Infect Dis J · May 1, 2023
BACKGROUND: Racial inequities influence health outcomes in the United States, but their impact on sepsis outcomes among children is understudied. We aimed to evaluate for racial inequities in sepsis mortality using a nationally representative sample of ped ...
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Journal ArticleFront Immunol · 2023
Children with complete DiGeorge anomaly (cDGA) have congenital athymia, resulting in severe T cell immunodeficiency and susceptibility to a broad range of infections. We report the clinical course, immunologic phenotypes, treatment, and outcomes of three c ...
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Journal ArticleJ Infect Dis · December 13, 2022
BACKGROUND: This United States-based study compared 2 candidate vaccines: RSV/ΔNS2/Δ1313/I1314L, attenuated by NS2 gene-deletion and temperature-sensitivity mutation in the polymerase gene; and RSV/276, attenuated by M2-2 deletion. METHODS: RSV-seronegativ ...
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Journal ArticleClin Infect Dis · August 24, 2022
BACKGROUND: Children are less susceptible to SARS-CoV-2 infection and typically have milder illness courses than adults, but the factors underlying these age-associated differences are not well understood. The upper respiratory microbiome undergoes substan ...
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Journal ArticleVaccine · August 5, 2022
BACKGROUND: Streptococcus pneumoniae is a leading cause of severe infections among children. Despite vaccination, HIV-exposed, uninfected (HEU) children have a higher incidence of invasive pneumococcal disease than HIV-unexposed, uninfected (HUU) children. ...
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Journal ArticleSupport Care Cancer · June 2022
PURPOSE: Pediatric hematopoietic stem cell transplantation (HSCT) confers a substantial financial burden onto patients' families. In addition to high direct medical costs, HSCTs typically require at least one caregiver to take time away from work or other ...
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Journal ArticlePediatrics · June 1, 2022
OBJECTIVES: Over 6 million pediatric severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections have occurred in the United States, but risk factors for infection remain poorly defined. We sought to evaluate the association between asthma and ...
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Journal ArticleISME J · March 2022
Streptococcus pneumoniae (pneumococcus) is a leading cause of severe infections among children and adults. Interactions between commensal microbes in the upper respiratory tract and S. pneumoniae are poorly described. In this study, we sought to identify i ...
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Journal ArticleOpen Forum Infect Dis · February 2022
BACKGROUND: Cytomegalovirus (CMV) causes substantial morbidity and mortality after hematopoietic stem cell transplantation (HSCT). There are limited data on risk factors for CMV viremia and the safety of antiviral medications used to treat CMV in children. ...
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Journal ArticlePLoS One · 2022
Pneumococcal conjugate vaccines reduce the burden of invasive pneumococcal disease, but the sustained effect of these vaccines can be diminished by an increase in disease caused by non-vaccine serotypes. To describe pneumococcal serotype epidemiology in Bo ...
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Journal ArticlePLoS One · 2022
BACKGROUND: Pediatric solid organ transplant (SOT) recipients commonly have Epstein-Barr virus (EBV) DNAemia and are at risk of developing post-transplant lymphoproliferative disorder (PTLD). EBV DNAemia has not been analyzed on a continuous scale in this ...
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Journal ArticleClin Infect Dis · November 2, 2021
BACKGROUND: Child with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection typically have mild symptoms that do not require medical attention, leaving a gap in our understanding of the spectrum of SARS-CoV-2-related illnesses that the vi ...
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Journal ArticleJCI Insight · September 8, 2021
As SARS-CoV-2 continues to spread globally, questions have emerged regarding the strength and durability of immune responses in specific populations. In this study, we evaluated humoral immune responses in 69 children and adolescents with asymptomatic or m ...
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Journal ArticleClin Infect Dis · September 2, 2021
BACKGROUND: Respiratory syncytial virus (RSV) is a leading cause of pediatric death, with >99% of mortality occurring in low- and lower middle-income countries. At least half of RSV-related deaths are estimated to occur in the community, but clinical chara ...
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Journal ArticleTransplant Cell Ther · August 2021
Allogeneic hematopoietic stem cell transplantation (HCT) has the potential to cure hematologic malignancies but is associated with significant morbidity and mortality. Although deaths during the first year after transplantation are often attributable to tr ...
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Journal ArticleClin Infect Dis · July 15, 2021
BACKGROUND: Globally, pneumonia is the leading cause of death among children. Few data exist regarding the effect of Haemophilus influenzae type b (Hib) vaccine and 13-valent pneumococcal conjugate vaccine (PCV-13) on the burden of childhood pneumonia in A ...
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Journal ArticlemedRxiv · April 20, 2021
As SARS-CoV-2 continues to spread globally, questions have emerged regarding the strength and durability of immune responses in specific populations. In this study, we evaluated humoral immune responses in 69 children and adolescents with asymptomatic or m ...
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Journal ArticlemedRxiv · March 23, 2021
UNLABELLED: Children are less susceptible to SARS-CoV-2 and typically have milder illness courses than adults. We studied the nasopharyngeal microbiomes of 274 children, adolescents, and young adults with SARS-CoV-2 exposure using 16S rRNA gene sequencing. ...
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Journal ArticleNat Commun · February 17, 2021
SARS-CoV-2 infection has been shown to trigger a wide spectrum of immune responses and clinical manifestations in human hosts. Here, we sought to elucidate novel aspects of the host response to SARS-CoV-2 infection through RNA sequencing of peripheral bloo ...
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Journal ArticleTransplant Cell Ther · February 2021
Variation in the gastrointestinal (GI) microbiota after hematopoietic cell transplantation (HCT) has been associated with acute graft-versus-host disease (aGVHD). Because antibiotics induce dysbiosis, we examined the association of broad-spectrum antibioti ...
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Journal ArticleFront Microbiol · 2021
Introduction: The airway microbiota has been linked to specific paediatric respiratory diseases, but studies are often small. It remains unclear whether particular bacteria are associated with a given disease, or if a more general, non-specific microbiota ...
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Journal ArticleClin Infect Dis · November 5, 2020
The current pandemic of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of coronavirus disease 2019 (COVID-19), reveals a peculiar trend of milder disease and lower case fatality in children compared with adults. Consisten ...
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Journal ArticleBiol Blood Marrow Transplant · November 2020
Certain anaerobic bacteria are important for maintenance of gut barrier integrity and immune tolerance and may influence the risk of graft-versus-host disease (GVHD) after allogeneic hematopoietic stem cell transplantation (HSCT). We conducted a single-cen ...
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Journal ArticleOpen Forum Infect Dis · November 2020
BACKGROUND: Bloodstream infections (BSIs) occur frequently after hematopoietic stem cell transplantation (HSCT). We examined the microbiology of BSI in pediatric HSCT recipients over a 2-decade period at our institution to inform empirical antimicrobial pr ...
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Journal ArticlemedRxiv · September 1, 2020
BACKGROUND: Children with SARS-CoV-2 infection typically have mild symptoms that do not require medical attention, leaving a gap in our understanding of the spectrum of illnesses that the virus causes in children. METHODS: We conducted a prospective cohort ...
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Journal ArticlemedRxiv · July 26, 2020
In order to elucidate novel aspects of the host response to SARS-CoV-2 we performed RNA sequencing on peripheral blood samples across 77 timepoints from 46 subjects with COVID-19 and compared them to subjects with seasonal coronavirus, influenza, bacterial ...
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Journal ArticleJ Pediatric Infect Dis Soc · July 13, 2020
BACKGROUND: Maternal human immunodeficiency virus (HIV) infection is associated with lower placental transfer of antibodies specific to several childhood pathogens. Our objective for this study was to evaluate the effect of maternal HIV infection on the pl ...
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Journal ArticleMicrobiologyopen · July 2020
Fecal samples collected for microbiome analyses are typically frozen to avoid postcollection changes in microbial composition. eNAT is a guanidine thiocyanate-based medium that stabilizes microbial DNA and allows safe specimen handling and shipping by inac ...
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Journal ArticlePediatr Radiol · June 2020
BACKGROUND: In low- and middle-income countries, chest radiographs are most frequently interpreted by non-radiologist clinicians. OBJECTIVE: We examined the reliability of chest radiograph interpretations performed by non-radiologist clinicians in Botswana ...
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Journal ArticleNature · May 2020
The gut of healthy human neonates is usually devoid of viruses at birth, but quickly becomes colonized, which-in some cases-leads to gastrointestinal disorders1-4. Here we show that the assembly of the viral community in neonates takes place in distinct st ...
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Journal ArticleOpen Forum Infect Dis · April 2020
BACKGROUND: Children undergoing hematopoietic stem cell transplantation (HSCT) are at high risk for hospital-associated bloodstream infections (HA-BSIs). This study aimed to describe the incidence, microbiology, and risk factors for HA-BSI in pediatric HSC ...
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Journal ArticleJAMA Pediatr · February 1, 2020
IMPORTANCE: Studies suggest that postnatal cytomegalovirus (CMV) infection can lead to long-term morbidity in infants with very low birth weight (VLBW; <1500 g), including bronchopulmonary dysplasia (BPD), necrotizing enterocolitis (NEC), and neurodevelopm ...
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Chapter · January 1, 2020
At birth, infants become colonized with trillions of commensal microbes that play important roles in health and disease. The majority of these microbes reside in the gastrointestinal tract. Complex microbial communities are also found on all human surfaces ...
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Journal ArticleBMC Pediatr · November 16, 2019
BACKGROUND: There are scant data on the prevalence and clinical course of pertussis disease among infants with pneumonia in low- and middle-income countries. While pertussis vaccination coverage is high (≥90%) among infants in Botswana, human immunodeficie ...
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Journal ArticleBiol Blood Marrow Transplant · November 2019
The gastrointestinal tract is the predicted reservoir for most bloodstream infections (BSIs) after hematopoietic stem cell transplantation (HSCT). Whole-genome sequencing and comparative genomics have the potential to improve our understanding of the dynam ...
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Journal ArticlePediatr Infect Dis J · May 2019
Among children 1-23 months of age with respiratory syncytial virus-associated acute lower respiratory infection in Botswana, young age (<6 months), household use of wood as a cooking fuel, moderate or severe malnutrition and oxygen saturation <90% on room ...
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Journal ArticleBiol Blood Marrow Transplant · April 2019
Infections and graft-versus-host disease (GVHD) have historically resulted in high mortality among children undergoing umbilical cord blood transplantation (UCBT). However, recent advances in clinical practice have likely improved outcomes of these patient ...
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Journal ArticleJ Pediatric Infect Dis Soc · March 28, 2019
BACKGROUND: Human immunodeficiency virus-exposed but uninfected (HIV-EU) children have a higher mortality rate than the children of HIV-negative mothers (HIV-unexposed). Causal mediators of the poor health outcomes of HIV-EU children remain poorly defined. ...
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Journal ArticlePediatr Infect Dis J · November 2018
BACKGROUND: Nasopharyngeal colonization precedes infections caused by Streptococcus pneumoniae. A more detailed understanding of interactions between S. pneumoniae and the nasopharyngeal microbiota of children could inform strategies to prevent pneumococca ...
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Journal ArticleBiol Blood Marrow Transplant · September 2018
Autopsy may confirm clinical diagnoses or identify conditions that were not suspected prior to a patient's death. Previous studies evaluating the utility of autopsy in hematopoietic stem cell transplant (HSCT) recipients yielded conflicting results. We con ...
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Journal ArticlePediatr Infect Dis J · September 2017
BACKGROUND: Piperacillin, in combination with tazobactam, is frequently used in infants for treating nosocomial infections, although safety data in this population are limited. Electronic health record (EHR) data can be used to evaluate drug safety in infa ...
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Journal ArticlePediatr Infect Dis J · September 2017
BACKGROUND: Nearly half of child pneumonia deaths occur in sub-Saharan Africa. Microbial communities in the nasopharynx are a reservoir for pneumonia pathogens and remain poorly described in African children. METHODS: Nasopharyngeal swabs were collected fr ...
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Journal ArticleAm J Perinatol · June 2017
Objective Identify the progression of specific signs of multiorgan dysfunction among infants with fatal sepsis. Study Design Cohort study of 679 infants who died within 3 days of the start of a late-onset sepsis (LOS) episode in neonatal intensive care uni ...
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Journal ArticlePLoS One · 2017
INTRODUCTION: Diarrhoeal disease is the second-leading cause of death in young children. Current guidelines recommend treating children with acute non-bloody diarrhea with oral rehydration solutions and zinc, but not antimicrobials. However, in many resour ...
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Journal ArticlePediatr Infect Dis J · March 2016
BACKGROUND: Chest radiography is increasingly used to diagnose pneumonia in low-income and middle-income countries. Few studies examined whether chest radiographic findings predict outcomes of children with clinically suspected pneumonia in these settings. ...
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Journal ArticleJAMA Pediatr · December 2015
IMPORTANCE: Postnatally acquired cytomegalovirus (CMV) is typically benign in term infants but in very low-birth-weight (VLBW) infants can cause pneumonitis and sepsislike illness. Whether postnatal CMV infection results in long-term pulmonary sequelae in ...
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Journal ArticleJ Pediatric Infect Dis Soc · December 2015
BACKGROUND: Human immunodeficiency virus (HIV)-exposed, uninfected (HIV-EU) children are at increased risk of infectious illnesses and mortality compared with children of HIV-negative mothers (HIV-unexposed). However, treatment outcomes for lower respirato ...
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Journal ArticleClin Perinatol · March 2015
Invasive candidiasis is a leading infectious cause of morbidity and mortality in premature infants. Improved recognition of modifiable risk factors and antifungal prophylaxis has contributed to the recent decline in the incidence of this infection among in ...
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Journal ArticleInt J Tuberc Lung Dis · March 2015
SETTING: Tertiary hospital in Gaborone, Botswana. OBJECTIVE: To examine whether exposure to wood smoke worsens outcomes of childhood pneumonia. DESIGN: Prospective cohort study of children aged 1-23 months meeting clinical criteria for pneumonia. Household ...
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Journal ArticlePLoS One · 2015
BACKGROUND: The highest incidence of childhood acute lower respiratory tract infection (ALRI) is in low- and middle-income countries. Few studies examined whether detection of respiratory viruses predicts ALRI outcomes in these settings. METHODS: We conduc ...
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Journal ArticleInfection Control & Hospital Epidemiology · November 2011
Background and Objective.Central line-associated bloodstream infections (CLABSIs) frequently complicate the use of central venous catheters (CVCs) among pediatric patients with cancer. ...
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