Publications by authors named "Vanessa Harris"

Childhood stunting is associated with impaired cognitive development and increased risk of infections, morbidity, and mortality. The composition of the enteric microbiota may contribute to the pathogenesis of stunting. We systematically reviewed and synthesized data from studies using high-throughput genomic sequencing methods to characterize the gut microbiome in stunted versus non-stunted children under 5 years in LMICs.

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Obtaining medication from the informal sector is common in low- and middle- income countries. Informal sector use increases the risk for inappropriate medication use, including inappropriate antibiotic usage. Infants are at the highest risk of complications from inappropriate medication use, yet there is insufficient knowledge about the risk factors driving caregivers to obtain medication from the informal sector for young children.

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Background: Inappropriate antimicrobial usage is a key driver of antimicrobial resistance (AMR). Low- and middle-income countries (LMICs) are disproportionately burdened by AMR and young children are especially vulnerable to infections with AMR-bearing pathogens. The impact of antibiotics on the microbiome, selection, persistence, and horizontal spread of AMR genes is insufficiently characterized and understood in children in LMICs.

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Importance: Mothers of children with disabilities experience health disparity. Interventions targeting maternal mental health need to be developed.

Objective: To determine the feasibility and preliminary effectiveness of the Healthy Mothers Healthy Families-Health Promoting Activities Coaching (HMHF-HPAC) intervention for mothers to improve participation in healthy activities and mental health and to evaluate outcome measures.

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Background: Opportunistic infection is an under-recognized complication of Cushing's syndrome, with infection due to atypical mycobacterium rarely reported. Mycobacterium szulgai commonly presents as pulmonary infection, with cutaneous infection seldom reported in the literature.

Case Presentation: 48-year-old man with a newly-diagnosed Cushing's syndrome secondary to adrenal adenoma presented with a subcutaneous mass on the dorsum of his right hand, was diagnosed with cutaneous Mycobacterium szulgai infection.

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Background: Coronavirus disease 2019 (COVID-19)-induced mortality occurs predominantly in older patients. Several immunomodulating therapies seem less beneficial in these patients. The biological substrate behind these observations is unknown.

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The health of the planet is one objective of the United Nations' Sustainable Development Goals. Vaccines can affect not only human health but also planet health by reducing poverty, preserving microbial diversity, reducing antimicrobial resistance, and preventing an increase in pandemics that is fueled partly by climate change.

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This grand round describes the case of a patient who received 10 grams (143.5 mg/kg) of vancomycin every 24 hours via continuous infusion, in whom the highest observed level was only 15.4 mg/L.

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Background: Health professionals' commitment is needed to address disparities in hypertension control by ancestry, but their perceptions regarding these disparities are understudied.

Methods: Cross-sectional mixed methods study in a universal healthcare setting in the Netherlands. Snowball sampling was used to include professionals practicing in a large multicity conglomerate including the capital city.

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The existing psychosocial Support activities in the Northern Territory, Australia, are mostly delivered through individualised outreach and client-centred Support programs and do not currently have a strong Peer focus. To address this gap, a Peer-Led Education Pilot was developed and implemented in Darwin, Australia. The pilot was comprised of three separate but overarching stages, and each stage was independently evaluated.

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Background: Evidence from the United States and United Kingdom suggests that ethnic minority populations are at an increased risk for developing severe coronavirus disease 2019 (COVID-19); however, data from other West-European countries are scarce.

Methods: We analyzed data from 1439 patients admitted between February 2020 and January 2021 to 4 main hospitals in Amsterdam and Almere, the Netherlands. Differences in the risk for hospitalization were assessed by comparing demographics to the general population.

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Background: Health Promoting Activity Coaching, an intervention within the Healthy Mothers Healthy Families programme (HMHF-HPAC), was delivered by occupational therapists in a project that assessed feasibility of this new intervention. The HMHF-HPAC promotes the health and well-being of mothers of children with disabilities and is a six-session programme with website, workbook, and one-on-one coaching. Consumer experiences of this novel health-promoting intervention were sought to enable consumer-informed feedback for future modifications and improvements prior to further development.

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The interferon (IFN) response is the major early innate immune response against invading viral pathogens and is even capable of mediating sterilizing antiviral immunity without the support of the adaptive immune system. Cumulative evidence suggests that the gut microbiota can modulate IFN responses, indirectly determining virological outcomes. This review outlines our current knowledge of the interactions between the gut microbiota and IFN responses and dissects the different mechanisms by which the gut microbiota may alter IFN expression to diverse viral infections.

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Rotavirus vaccines (RVVs) have substantially diminished mortality from severe rotavirus (RV) gastroenteritis but are significantly less effective in low- and middle-income countries (LMICs), limiting their life-saving potential. The etiology of RVV's diminished effectiveness remains incompletely understood, but the enteric microbiota has been implicated in modulating immunity to RVVs. Here, we analyze the enteric microbiota in a longitudinal cohort of 122 Ghanaian infants, evaluated over the course of 3 Rotarix vaccinations between 6 and 15 weeks of age, to assess whether bacterial and viral populations are distinct between non-seroconverted and seroconverted infants.

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1,5 years into the pandemic, SARS-CoV-2 remains a dynamic and evolving disease. Growing proportions of the population have been vaccinated, but what degree of protection does vaccination actually offer, particularly in the face of an evolving virus and the emergence of viral variants? Here we explore the limits of vaccine protection -providing an overview of emerging data on how well vaccines protect against mild and asymptomatic disease, vaccine effectiveness against the backdrop of variants such as the Delta, and the implications for SARS-CoV-2 transmission. We assess the continued risks for our vulnerable elderly and immune-compromised patient populations, and whether emerging literature should impact our diagnostic strategies.

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Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection results in a spectrum of clinical presentations. Evidence from Africa indicates that significantly less COVID-19 patients suffer from serious symptoms than in the industrialized world. We and others previously postulated a partial explanation for this phenomenon, being a different, more activated immune system due to parasite infections.

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Human rotavirus (HRV) is the leading worldwide cause of acute diarrhea-related death in children under the age of five. RV infects the small intestine, an important site of colonization by the microbiota, and studies over the past decade have begun to reveal a complex set of interactions between RV and the gut microbiota. RV infection can temporarily alter the composition of the gut microbiota and probiotic administration alleviates some symptoms of infection , suggesting reciprocal effects between the virus and the gut microbiota.

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Article Synopsis
  • * The study analyzed 1,070 patients with respiratory symptoms at six medical centers, comparing chest CT results to RT-PCR tests and a clinical reference standard established by a group of medical professionals.
  • * Chest CT demonstrated strong diagnostic performance, with an area under the curve (AUC) of 0.87 for both RT-PCR and clinical reference standards, indicating that higher CO-RADS scores significantly correlated with the likelihood of a COVID-19 diagnosis.
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: Increasing attention is being paid to the role of the intelligent self-management of hypertension under the context of increasing prevalence but limited medical resources. However, heterogeneity in interventions and outcome measures has hindered the interpretation of research evaluating mobile health technologies for hypertension control, and little study of such technology has been performed in China. : This was a feasibility study aimed to understand patient and medical practitioners' acceptance and experience of a mobile-phone based platform for the management of hypertensive patients.

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Rotavirus vaccines (RVV) protect against childhood gastroenteritis caused by rotavirus (RV) but have decreased effectiveness in low- and middle-income settings. This proof-of-concept, randomized-controlled, open-label trial tested if microbiome modulation can improve RVV immunogenicity. Healthy adults were randomized and administered broad-spectrum (oral vancomycin, ciprofloxacin, metronidazole), narrow-spectrum (vancomycin), or no antibiotics and then vaccinated with RVV, 21 per group per protocol.

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Despite unprecedented advances in understanding the intestinal microbiome, its potential to improve fields such as vaccinology has yet to be realized. This review briefly outlines the immunologic potential of the intestinal microbiome for vaccinology and highlights areas where the microbiome holds specific promise in vaccinology. Oral rotavirus vaccine effectiveness in low-income countries is used as a case study to describe how the intestinal microbiome may be employed to improve a vaccine's immunogenicity.

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Rotavirus (RV) is the leading cause of diarrhea-related death in children worldwide and ninety-five percent of rotavirus deaths occur in Africa and Asia. Rotavirus vaccines (RVV) can dramatically reduce RV deaths, but have low efficacy in low-income settings where they are most needed. The intestinal microbiome may contribute to this decreased RVV efficacy.

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