Publications by authors named "William Duke"

Little is known about the epidemiology of leptospirosis in the Dominican Republic, the second most populous country in the Caribbean. We report on findings from a multi-stage household survey across two regions in the country that reveals a previously under-estimated burden of human Leptospira infection. Our findings, based on the reference-standard microscopic agglutination test, indicate a complex picture of serogroup diversity, spatial heterogeneity in infection and risk, and a marked discrepancy between reported cases and serologically estimated infections.

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The 2014 chikungunya outbreak in the Dominican Republic resulted in intense local transmission, with high postoutbreak seroprevalence. The resulting population immunity will likely minimize risk for another large outbreak through 2035, but changes in population behavior or environmental conditions or emergence of different virus strains could lead to increased transmission.

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Article Synopsis
  • Researchers studied how individual immune responses to SARS-CoV-2 affect overall population immunity and its impact on disease transmission.
  • Blood samples were collected from participants in the Dominican Republic at two points during the pandemic to analyze changes in antibody levels using advanced statistical models.
  • Findings revealed that widespread transmission led to a convergence in antibody levels across different individuals, suggesting that this could inform future vaccination strategies and improve public health planning.
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Objective: This study investigates the role of trust in shaping COVID-19 vaccine acceptance in the Dominican Republic (DR) during the COVID-19 pandemic.

Design: Cross-sectional household survey.

Setting: Randomly selected households across 134 clusters in the DR, from 30 June 2021 to 12 October 2021.

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Background: Proper hand hygiene (HH), which includes sanitizing with alcohol-based hand rub (ABHR) (or handwashing with soap and water if ABHR is unavailable), is key for preventing healthcare-associated infections (HCAI), including COVID-19. Understanding drivers of HH is key to improving adherence.

Aim: This study aims to explore drivers and barriers to HH practice at two hospitals in the Dominican Republic in the context of the COVID-19 pandemic to inform development of HH behaviour change interventions.

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Article Synopsis
  • COVID-19 incidence in the Dominican Republic varies by sociodemographic factors, with a focus on regional differences in seroprevalence of SARS-CoV-2 antibodies from a study conducted between June and October 2021.
  • A total of 6,683 participants were analyzed, revealing that the Enriquillo region had significantly higher odds of seropositivity and protection against symptomatic Delta and ancestral strains compared to Yuma.
  • Vaccination had a substantial impact, with those receiving two or more doses showing a significantly higher likelihood of antibody positivity and protection compared to unvaccinated individuals, indicating the need for targeted public health strategies to improve vaccination in regions with lower immunity.
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Chronically high levels of inorganic nutrients have been documented in Florida's coral reefs and are linked to increased prevalence and severity of coral bleaching and disease. Naturally disease-resistant genotypes of the staghorn coral Acropora cervicornis are rare, and it is unknown whether prolonged exposure to acute or chronic high nutrient levels will reduce the disease tolerance of these genotypes. Recently, the relative abundance of the bacterial genus Aquarickettsia was identified as a significant indicator of disease susceptibility in A.

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Article Synopsis
  • A study was conducted with 2,300 patients in the Dominican Republic between March 2021 and August 2022 to track changes in antibodies against the SARS-CoV-2 spike protein.
  • The geometric mean of these spike-binding antibodies significantly increased from 6.6 BAU/mL early in the study to 1,332 BAU/mL by mid-2022.
  • The results indicated that higher antibody levels were associated with a lower likelihood of acute infection, suggesting that monitoring both antibody levels and viral presence can help assess community immunity against emerging COVID-19 variants.
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  • A study in the Dominican Republic assessed SARS-CoV-2 immunological protection and found that a significant percentage of the population had been exposed or infected.
  • Out of 6,683 participants, the research estimated that 85% had immunological exposure, with 78% achieving at least 50% protection against symptomatic infection from the ancestral strain and 66% against the Delta strain.
  • Factors such as age, outdoor work, smoking, urban living, and vaccination status influenced the level of protection, highlighting variations in immunological response across different demographics.
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  • Most JAK2-negative myeloproliferative neoplasms (MPNs) have mutations in calreticulin (CALR), which produce unique neoantigens that could be useful for cancer vaccines, but CALR-specific T cells are surprisingly rare in these patients.
  • Research found that patients with CALR MPN lack MHC-I alleles that effectively present CALR neoepitopes, possibly preventing immune responses that could have led to earlier tumor rejection.
  • The study suggests that using modified CALR heteroclitic peptide vaccines tailored to the MHC-I alleles of patients can effectively stimulate an immune response, indicating their potential as a new therapeutic approach for CALR MPN.
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We report one- and 2-year results of a prospective, 5-year, multicenter study of radiographic, clinical, and patient-reported outcomes following triplanar first tarsometatarsal arthrodesis with early weightbearing. One-hundred and seventeen patients were included with a mean (95% confidence interval [CI]) follow-up time of 16.6 (15.

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Nutrient pollution is linked to coral disease susceptibility and severity, but the mechanism behind this effect remains underexplored. A recently identified bacterial species, 'Ca. Aquarickettsia rohweri,' is hypothesized to parasitize the Caribbean staghorn coral, Acropora cervicornis, leading to reduced coral growth and increased disease susceptibility.

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Although somatic mutations influence the pathogenesis, phenotype, and outcome of myeloproliferative neoplasms (MPNs), little is known about their impact on molecular response to cytoreductive treatment. We performed targeted next-generation sequencing (NGS) on 202 pretreatment samples obtained from patients with MPN enrolled in the DALIAH trial (A Study of Low Dose Interferon Alpha Versus Hydroxyurea in Treatment of Chronic Myeloid Neoplasms; #NCT01387763), a randomized controlled phase 3 clinical trial, and 135 samples obtained after 24 months of therapy with recombinant interferon-alpha (IFNα) or hydroxyurea. The primary aim was to evaluate the association between complete clinicohematologic response (CHR) at 24 months and molecular response through sequential assessment of 120 genes using NGS.

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Objective: Recent advances in preoperative imaging techniques and intraoperative parathyroid hormone (ioPTH) assays have made single-gland, minimally invasive parathyroidectomy (MIP) the preferred treatment option for most patients with primary hyperparathyroidism (pHPT). Despite this evolution, a recommendation for bilateral neck exploration (BNE) with four-gland dissection in all patients has recently been advocated by a parathyroid surgical group. The current study compares the long-term outcomes of MIP with those of conventional BNE with four-gland dissection in patients with pHPT.

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Background: We sought to evaluate the relationship between the preoperative core-laboratory parathyroid hormone (CL-PTH) level and the baseline intraoperative PTH (IOPTH) level and assess the impact of any differences on clinical decision making in consecutive surgical patients with primary hyperparathyroidism undergoing parathyroidectomy.

Methods: The CL-PTH and baseline IOPTH levels were compared. The influence of relying on either the CL-PTH or baseline PTH levels for intraoperative decision making was determined.

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Eating and sleeping represent two mutually exclusive behaviors that satisfy distinct homeostatic needs. Because an animal cannot eat and sleep at the same time, brain systems that regulate energy homeostasis are likely to influence sleep/wake behavior. Indeed, previous studies indicate that animals adjust sleep cycles around periods of food need and availability.

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Objectives To define characteristics that influence patient perceptions of thyroidectomy scar cosmesis. Study Design Prospective cohort study. Setting Tertiary endocrine surgery practice in an academic medical center.

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Objectives: 1) Determine the safety of outpatient thyroidectomy in the geriatric patient population. 2) Analyze the risk of postoperative complications from thyroid surgery in patients aged over 65 years (elderly) and aged over 80 years (super-elderly) undergoing ambulatory thyroidectomy compared to patients aged 21 through 40 years.

Study Design: A retrospective analysis of consecutive patients undergoing thyroidectomy between January 2008 and July 2015 at a tertiary academic institution.

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Background: Robotic facelift thyroidectomy (RFT) was developed as a new surgical approach to the thyroid gland using a remote incision site. Early favorable results led to this confirmatory multi-institutional experience.

Methods: Prospectively collected data on consecutive patients undergoing RFT in five North American academic endocrine surgical practices were compiled.

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Objectives/hypothesis: Explore potential causes of persistently elevated parathyroid hormone levels after curative parathyroidectomy in patients with primary hyperparathyroidism due to single gland disease.

Study Design: Case series with planned data collection.

Methods: An analysis was undertaken of 314 patients with primary hyperparathyroidism undergoing parathyroid surgery in a tertiary academic practice between January 2009 and April 2013.

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Objectives: To identify the importance of the ectopic, overly descended superior parathyroid adenoma variant and its prevalence in primary and reoperative parathyroid surgery and the implications for successful initial parathyroidectomy.

Study Design: Case series with planned data collection.

Setting: Tertiary endocrine surgery practice in an academic medical center.

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Objectives: Outpatient thyroid surgery is becoming increasingly common. The aim of this study was to clarify the principles for safe outpatient thyroid surgery and review our outcomes with the use of a protocol for outpatient thyroidectomy in a large patient cohort.

Study Design: A systematic analysis of a prospectively maintained database of outcomes of thyroidectomy in a tertiary endocrine surgery practice.

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Techniques for thyroid surgery have advanced dramatically over the past two decades, driven by a better understanding of thyroid physiology, anatomy, and perioperative management strategies. Improvements in surgical technology have permitted surgeons to perform minimally invasive surgery associated with less dissection, decreased pain, smaller anterior cervical incisions, and most importantly a faster recovery. The advent of robotic surgical technology has allowed the development of remote access thyroidectomy for select patients who wish to avoid a visible cervical incision completely.

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Synopsis of recent research by authors named "William Duke"

  • - William Duke's recent research focuses on understanding the dynamics of immune responses to SARS-CoV-2, particularly in the context of population immunity and its implications on public health interventions in the Dominican Republic. The studies investigate both antibody levels at a population level and trust factors affecting COVID-19 vaccine acceptance.
  • - His work includes multi-stage surveys and qualitative studies aimed at understanding hand hygiene practices among healthcare staff during the pandemic, highlighting barriers to adherence that can inform effective behavior change interventions.
  • - Additionally, Duke explores the relationship between environmental factors and coral health in the Caribbean, particularly the effects of nutrient enrichment on disease resistance in coral species, indicating a broader ecological aspect to his research interests.