Publications by authors named "Samantha Williams"

For this narrative review, we describe recent high-profile and severe outbreaks of emerging fungal infections, emphasizing lessons learned and opportunities to improve future prevention and response efforts. Several themes and challenges remain consistent across a diverse array of fungal outbreaks, including the multidisciplinary need for improved diagnostic testing to determine species and perform antifungal susceptibility testing, clinical awareness, and optimization of antifungal use. Recent outbreaks exemplify the growing promise of non-culture-based tools in identifying fungal outbreaks and improving responses, although access remains limited.

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  • Coccidioidomycosis is a serious fungal infection that can be transmitted through organ transplantation, with a review of cases from 2013 to 2022 revealing significant risks.
  • Seven deceased donors transmitted the infection to eight recipients, resulting in a 40% infection rate among organ recipients.
  • The study highlights the importance of thorough donor evaluations and antifungal treatment to reduce the high mortality associated with these infections post-transplant.
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  • - A study was done on a cluster of blastomycosis cases affecting both humans and dogs in a Wisconsin neighborhood.
  • - Researchers interviewed residents and gathered blood samples to test for Blastomyces antibodies using enzyme immunoassay techniques.
  • - While no clear cause was identified, possible exposure sources include the nearby riverbank, trails, yards, or dust from construction activities.
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  • Fungal diseases show significant disparities among different demographic populations, with a lack of thorough investigation into the factors driving these differences.
  • Social determinants of health, like income, living conditions, and access to healthcare, are linked to higher risks of fungal infections and poorer health outcomes.
  • Various data sources in the U.S. can help analyze the connections between fungal diseases and social determinants, but researchers need to consider the limitations and challenges of the data, such as underdiagnosis and underreporting.
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To explore associations between histoplasmosis and race and ethnicity, socioeconomic status, and rurality, we conducted an in-depth analysis of social determinants of health and histoplasmosis in 8 US states. Using the Minority Health Social Vulnerability Index (MH SVI), we analyzed county-level histoplasmosis incidence (cases/100,000 population) from the 8 states by applying generalized linear mixed hurdle models. We found that histoplasmosis incidence was higher in counties with limited healthcare infrastructure and access as measured by the MH SVI and in more rural counties.

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  • Blastomycosis, coccidioidomycosis, and histoplasmosis are fungal diseases that mimic pneumonia symptoms, causing diagnostic delays as healthcare providers often don’t consider them initially.
  • A study analyzed lab tests from a national lab system between 2019 and 2024, revealing low positive rates for these diseases and highlighting that most tests were ordered by hospitals for histoplasmosis and blastomycosis, while primary care providers primarily ordered coccidioidomycosis tests.
  • The findings suggest these fungal infections may be underdiagnosed in primary care and public health settings, signaling a need for greater testing and enhanced surveillance to better manage these diseases.
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Background: A small amount of evidence suggests that nasal sprays, or physical activity and stress management, could shorten the duration of respiratory infections. This study aimed to assess the effect of nasal sprays or a behavioural intervention promoting physical activity and stress management on respiratory illnesses, compared with usual care.

Methods: This randomised, controlled, open-label, parallel-group trial was done at 332 general practitioner practices in the UK.

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Importance: There is significant concern regarding increasing long-term antidepressant treatment for depression beyond an evidence-based duration.

Objective: To determine whether adding internet and telephone support to a family practitioner review to consider discontinuing long-term antidepressant treatment is safe and more effective than a practitioner review alone.

Design, Setting, And Participants: In this cluster randomized clinical trial, 131 UK family practices were randomized between December 1, 2018, and March 31, 2022, with remote computerized allocation and 12 months of follow-up.

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Peripheral blood lymphocyte phenotyping panels typically include CD45 for discrimination of the lymphocyte population, and fluorophore-conjugated monoclonal antibodies to identify T, B, and Natural Killer (NK) cells. While CD45 combined with side scatter is generally sufficient to clearly distinguish lymphocytes from monocytes in the majority of peripheral blood samples, it is challenging to accurately gate lymphocytes in samples from patients with monocytosis or significant lymphopenia, or from very young infants. Addition of a monocyte marker to lymphocyte phenotyping panels for monocyte exclusion has previously been evaluated for improved discrimination of lymphocytes, albeit largely in healthy donor adult samples.

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Background: Guidelines on the management of depression recommend that practitioners use patient-reported outcome measures for the follow-up monitoring of symptoms, but there is a lack of evidence of benefit in terms of patient outcomes.

Objective: To test using the Patient Health Questionnaire-9 questionnaire as a patient-reported outcome measure for monitoring depression, training practitioners in interpreting scores and giving patients feedback.

Design: Parallel-group, cluster-randomised superiority trial; 1 : 1 allocation to intervention and control.

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Coccidioidomycosis, histoplasmosis, and blastomycosis are lower respiratory tract fungal infections whose signs and symptoms can resemble those of other respiratory illnesses, including pneumonia caused by bacterial or viral etiologies; this overlap in clinical presentation might lead to missed or delayed diagnoses. The causative fungi live in the environment, often in soil or plant matter. To describe the epidemiologic characteristics of cases of coccidioidomycosis, histoplasmosis, and blastomycosis during the COVID-19 pandemic, CDC analyzed case surveillance data for 2019-2021.

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Background: Outcome monitoring of depression treatment is recommended but there is a lack of evidence on patient benefit in primary care.

Aim: To test monitoring depression using the Patient Health Questionnaire (PHQ-9) with patient feedback.

Design And Setting: An open cluster-randomised controlled trial was undertaken in 141 group practices.

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Background: Buprenorphine can be used to treat maternal opioid use disorder effectively and decrease obstetrical risks. Compared with the use of other medications to treat opioid use disorder, the use of buprenorphine results in improved neonatal outcomes; however, its use is associated with higher rates of treatment attrition. Initiation of buprenorphine, termed "induction," is a high-risk time for treatment dropout and can require repeated attempts.

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Coccidioides is the fungal causative agent of Valley fever, a primarily pulmonary disease caused by inhalation of fungal arthroconidia, or spores. Although Coccidioides has been an established pathogen for 120 years and is responsible for hundreds of thousands of infections per year, little is known about when and where infectious Coccidioides arthroconidia are present within the ambient air in endemic regions. Long-term air sampling programs provide a means to investigate these characteristics across space and time.

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Background: Blastomycosis is an environmentally acquired fungal disease that can cause severe illness, with approximately 65% of reported cases requiring hospitalization. Recent trends in blastomycosis-associated hospitalizations in the United States have not been described.

Methods: We analyzed hospital discharge data from the Healthcare Cost and Utilization Project (HCUP) National (Nationwide) Inpatient Sample.

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Background: Public health officials are responding to an outbreak of fungal meningitis among patients who received procedures under epidural anesthesia at 2 clinics (River Side Surgical Center and Clinica K-3) in Matamoros, Mexico, during 1 January to 13 May 2023. This report describes outbreak epidemiology and outlines interim diagnostic and treatment recommendations.

Methods: Interim recommendations for diagnosis and management were developed by the Mycoses Study Group Research Education and Consortium (MSGERC) based on the clinical experience of clinicians caring for patients during the current outbreak or during previous outbreaks of healthcare-associated fungal meningitis in Durango, Mexico, and the United States.

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Objectives: To examine disparities by sex, age group, and race and ethnicity in COVID-19 confirmed cases, hospitalizations, and deaths among incarcerated people and staff in correctional facilities.

Methods: Six U.S.

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Public health departments have important roles to play in addressing the local health impacts of climate change, yet are often not well prepared to do so. The Climate and Health Program (CHP) at the Centers for Disease Control and Prevention (CDC) created the Building Resilience Against Climate Effects (BRACE) framework in 2012 as a five-step planning framework to support public health departments and their partners to respond to the health impacts of climate change. CHP has initiated a process to revise the framework to address learnings from a decade of experience with BRACE and advances in the science and practice of addressing climate and health.

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Tendinopathy of the foot and ankle is a common clinical problem for which the exact etiology is poorly understood. The field of epigenetics has been a recent focus of this investigation. The purpose of this article was to review the genomic advances in foot and ankle tendinopathy that could potentially be used to stratify disease risk and create preventative or therapeutic agents.

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  • The study estimated the COVID-19 impact in adult correctional facilities and nearby counties across 46 U.S. states, focusing on data from January 2020 to July 2021.
  • COVID-19 incidence rates were found to be higher in correctional facilities compared to their associated counties in 42 out of 46 states, indicating a significant burden in these environments.
  • The findings emphasize the urgent need for effective COVID-19 mitigation measures within correctional settings to curb the spread of the virus both inside the facilities and in surrounding communities.
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Background: The study purpose is to compare outcomes associated with completion of genetic testing between telemedicine and in-person gastrointestinal cancer risk assessment appointments during the COVID-19 pandemic.

Methods: Data was collected on patients with scheduled appointments between July 2020 and June 2021 in a gastrointestinal cancer risk evaluation program (GI-CREP) that utilized both telemedicine and in-person visits throughout the COVID-19 pandemic, and a survey was administered.

Results: A total of 293 patients had a GI-CREP appointment scheduled and completion rates of in-person versus telemedicine appointments were similar.

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