Publications by authors named "Fletcher G"

There has been an increase in foodborne vibriosis outbreaks globally, with Vibrio parahaemolyticus emerging as a foodborne issue in temperate commercial shellfish growing regions, including southern Australia. The food safety concerns associated with these microorganisms have led to the need for specific guidance on potential risk management strategies for their control. This is the first Australian multi-seasonal survey of V.

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Article Synopsis
  • The study investigates the prevalence and impact of Human pegivirus-1 (HPgV-1) in Indian individuals living with HIV, as there is limited research on this topic.
  • Among 347 HIV treatment-naïve participants, 11% tested positive for HPgV-1, while only 1% of 100 healthy controls did; HPgV-1 genotype-2a was primarily found in those with HIV.
  • The research indicates a correlation between HPgV-1 viral load and CD4+ T-cell counts, hinting at HPgV-1's potential influence on HIV disease progression, though further longitudinal studies are necessary for a clearer understanding.
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Over the course of the past two decades, attrition within the US governmental public health workforce has passed concerning and become dire. The practice sector has struggled to recruit and retain new talent, despite the infusion of considerable federal investment in workforce expansion initiatives. In 2020, Emory University's Rollins School of Public Health partnered with the Georgia Department of Public Health to establish the Rollins Epidemiology Fellowship Program.

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The nature of vaccine response inferiority is not well studied in children living with HIV (CLHIV). The authors investigated Hepatitis B Virus (HBV) and Diphtheria/Pertussis/Tetanus toxoid (DPT) vaccination responses following primary immunization in CLHIV (n = 42) and healthy controls (HC) (n = 38) and the effect of an additional vaccine dose. Antibody responses, CD4 and HBV-specific T/B cells were analysed using CMIA/ELISA and flow-cytometry.

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In the dynamic landscape of scientific research, imaging core facilities are vital hubs propelling collaboration and innovation at the technology development and dissemination frontier. Here, we present a collaborative effort led by Global BioImaging (GBI), introducing international recommendations geared towards elevating the careers of Imaging Scientists in core facilities. Despite the critical role of Imaging Scientists in modern research ecosystems, challenges persist in recognising their value, aligning performance metrics and providing avenues for career progression and job security.

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Article Synopsis
  • Norovirus is the main cause of viral gastroenteritis worldwide, mainly spreading through person-to-person contact and contaminated food, especially shellfish.
  • This study aims to assess norovirus infectivity in shellfish using reverse transcription quantitative PCR (RT-qPCR) and a specific dye (PMAxx-RT-qPCR) to analyze viral integrity after high-pressure processing (HPP).
  • Results showed increasing non-infectious virus ratios with higher pressure and temperature conditions, indicating that high-pressure treatments can reduce the integrity and infectivity of norovirus in shellfish.
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Embodied personalized avatars are a promising new tool to investigate moral decision-making by transposing the user into the "middle of the action" in moral dilemmas. Here, we tested whether avatar personalization and motor control could impact moral decision-making, physiological reactions and reaction times, as well as embodiment, presence and avatar perception. Seventeen participants, who had their personalized avatars created in a previous study, took part in a range of incongruent (i.

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In this study, three generations of polymerase chain reaction (PCR) assays: (i) conventional PCR, (ii) qPCR and (iii) droplet digital PCR (ddPCR), were systematically tested for their abilities to detect non-pathogenic and pathogenic populations of Vibrio parahaemolyticus. The limit of detection (LOD) for the ddPCR was 1.1 pg/µL of purified DNA, followed by the qPCR (5.

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Lung biopsies are often used to aid in the diagnosis of cancers. However, the procedure carries the dual risk of air (pneumothorax) or blood (hemothorax) filling the pleural cavity, increasing the risk of a collapsed lung and chest intubation. This work demonstrates the effectiveness of a polyurethane-based shape memory polymer foam as a biopsy tract sealant.

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Introduction: HIV-1 RNA detection is the most reliable method for monitoring treatment response among people living with HIV. Effective quality control measures that include internal quality control (IQC) are challenging in resource-constrained settings.

Methods: We ascertained the utility of the kit low positive control (LPC) as an effective IQC to monitor the reliability of the HIV-1 viral load assay.

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Background: Colorectal cancer (CRC) remains a relevant public health problem. Current research suggests that racial, economic and geographic disparities impact access. Despite the expansion of Medicaid eligibility as a key component of the Affordable Care Act (ACA), there is a dearth of information on the utilization of newly gained access to CRC screening by low-income individuals.

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The potential of using commercial peroxyacetic acid (PAA) for Vibrio parahaemolyticus sanitization was evaluated. Commercial PAA of 0.005 % (v/v, PAA: 2.

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Preoperative breast magnetic resonance imaging (MRI) is known to detect additional cancers that are occult on mammography and ultrasound. There is debate as to whether these additional lesions affect clinical outcomes. The objective of this systematic review was to summarize the evidence on whether additional information on disease extent obtained with preoperative breast MRI in patients with newly diagnosed breast cancer affects surgical management, rates of recurrence, survival, re-excision, and early detection of bilateral cancer.

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Background: The use of preoperative breast magnetic resonance imaging (MRI) after the diagnosis of breast cancer by mammography and/or ultrasound is inconsistent.

Methods: After conducting a systematic review and meta-analysis comparing preoperative breast MRI versus no MRI, we reconvened to prepare a clinical practice guideline on this topic.

Results: Based on the evidence that MRI improved recurrence, decreased the rates of reoperations (re-excisions or conversion mastectomy), and increased detection of synchronous contralateral breast cancer, we recommend that preoperative breast MRI should be considered on a case-by-case basis in patients diagnosed with breast cancer for whom additional information about disease extent could influence treatment.

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Background: Ultrasensitive HBsAg assays are replacing the previous versions. Unlike the sensitivity, the specificity, and its positioning to resolve weak-reactives (WR) are not studied. We investigated the ability of ARCHITECT HBsAg-Next (HBsAg-Nx) assay to resolve WR and sought its clinical validation and correlation with confirmatory/reflex testing.

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has been identified as an emerging human pathogen worldwide with cases undergoing a global expansion over recent decades in phase with climate change. New Zealand had remained free of outbreaks until 2019, but different outbreaks have been reported consecutively since then. To provide new insights into the recent emergence of cases associated with outbreak clones over recent years, a comparative genomic study was carried out using a selection of clinical (mostly outbreak) and environmental isolates of obtained in New Zealand between 1973 and 2021.

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Volume Electron Microscopy is a group of techniques that reveal the 3D ultrastructure of cells and tissues through volumes greater than 1 cubic micron. A burgeoning grass roots community effort is fast building the profile, and revealing the impact, of vEM technology in the life sciences and clinical research.

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Vibrio parahaemolyticus biofilms on the seafood processing plant surfaces are a potential source of seafood contamination and subsequent food poisoning. Strains differ in their ability to form biofilm, but little is known about the genetic characteristics responsible for biofilm development. In this study, pangenome and comparative genome analysis of V.

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Beneficial bacteria with antibacterial properties are attractive alternatives to chemical-based antibacterial or bactericidal agents. Our study sourced such bacteria from horticultural produce and environments to explore the mechanisms of their antimicrobial properties. Five strains of were studied that possessed antibacterial activity against the pathogen .

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The Hippo pathway was originally discovered to control tissue growth in Drosophila and includes the Hippo kinase (Hpo; MST1/2 in mammals), scaffold protein Salvador (Sav; SAV1 in mammals) and the Warts kinase (Wts; LATS1/2 in mammals). The Hpo kinase is activated by binding to Crumbs-Expanded (Crb-Ex) and/or Merlin-Kibra (Mer-Kib) proteins at the apical domain of epithelial cells. Here we show that activation of Hpo also involves the formation of supramolecular complexes with properties of a biomolecular condensate, including concentration dependence and sensitivity to starvation, macromolecular crowding, or 1,6-hexanediol treatment.

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Background: In the economy of therapeutic monitoring, an affordable viral marker is essential in the era of direct-acting antivirals (DAAs). We elucidated the kinetics of HCVcAg to delineate its precise role in monitoring therapeutic response.

Methods: In this longitudinal study, 3208 patients were tested for HCV RNA.

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Differentiating GCA from its many mimickers remains a challenge in the daily clinical practice, especially in patients presenting with unspecific manifestations. We present the case of an 82-year-old woman who presented with a 3-week history of left eye vision loss secondary to bilateral edema and hemorrhage of the optic discs. Despite negative bilateral temporal artery biopsies, the elevation of the inflammatory markers and brain MRA findings suggestive of temporal arteritis as well as stenosis of the basilar artery led us to initiate treatment with high-dose steroids.

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Background: HBsAg Next assay (HBsAgNx) claims improved detection of HBsAg. The aim was to investigate its performance in ascertaining HBsAg loss, ability to detect HBsAg in various phases of HBV infection, specificity and its amenability to in-house neutralization.

Methods: Analytical sensitivity was investigated using NIBSC standard (3rd WHO-IS).

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Kaposi sarcoma is a malignancy common in patients with acquired immune deficiency syndrome (AIDS). It is a proliferative soft-tissue tumor commonly manifesting as pigmented papules and nodules on the skin. Lesions can also appear on the mucosal lining of the oropharynx and other parts of the body such as the lymph nodes.

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