Background: Despite its global significance, challenges associated with understanding the epidemiology and accurately detecting, measuring, and characterizing the true burden of seasonal influenza remain in many resource-poor settings.
Methods: A prospective observational study was conducted in Cambodia at 28 health facilities between 2007 and 2020 utilizing passive surveillance data of patients presenting with acute undifferentiated febrile illness (AUFI) to describe the prevalence of influenza A and B and characterize associated risk factors and symptoms using a questionnaire. A comparison of rapid influenza diagnostic tests (RIDTs) and real-time reverse transcription polymerase chain reaction (rRT-PCR) results was also conducted.
Vaccination with the primary two-dose series of SARS-CoV-2 mRNA protects against infection with the ancestral strain, and limits the presentation of severe disease after re-infection by multiple variants of concern (VOC), including Omicron, despite the lack of a strong neutralizing response to these variants. We compared antibody responses in serum samples collected from mRNA-1273 (Moderna) vaccinated subjects to identify mechanisms of immune escape and cross-protection. Using pseudovirus constructs containing domain-specific amino acid changes representative of Omicron BA.
View Article and Find Full Text PDFDiarrheal diseases are a leading cause of mortality and morbidity, disproportionally affecting persons residing in low and middle-income countries. Accessing high-resolution surveillance data to understand community-level etiology and risk remains challenging, particularly in remote and resource limited populations. A multi-year prospective cohort study was conducted in two rural and two peri-urban villages in Cambodia from 2012 to 2018 to describe the epidemiology and etiology of acute diarrheal diseases within the population.
View Article and Find Full Text PDFOmicron and its subvariants have steadily gained greater capability of immune escape compared to other variants of concern, resulting in an increased incidence of reinfections even among vaccinated individuals. We evaluated the antibody response to Omicron BA.1, BA.
View Article and Find Full Text PDFBackground: In 2020, the Kingdom of Cambodia experienced a nationwide outbreak of chikungunya virus (CHIKV). Despite an increase in the frequency of outbreaks and expanding geographic range of CHIKV, diagnostic challenges remain, and limited surveillance data of sufficient granularity are available to characterize epidemiological profiles and disease dynamics of the virus.
Methods: An ongoing and long-standing cross-sectional study of acute undifferentiated febrile illness (AUFI) in Cambodia was leveraged to describe the disease epidemiology and characterize the clinical presentation of patients diagnosed with CHIKV during the 2020 outbreak.
Isoflurane has been characterized as a distressing agent for rodents, causing both physiologic and behavioral effects. Using a "darkened home cage" has been recommended during CO₂ administration for rodent euthanasia; this is arguably a similar animal experience to anesthetic induction with isoflurane. Based on the premise that rodents perceive red light as darkness via the primary optic tract, we compared physiologic and behavioral markers of stress in 2 inbred strains of mice (C57BL/6J and BALB/cJ) anesthetized with isoflurane in either a red-tinted (dark) induction chamber or a traditional translucent induction chamber.
View Article and Find Full Text PDFCoal ash spills occasionally occur due to the accidental failure of surface impoundments, and toxic metal-laden ash can pose a serious health threat to adjacent aquatic ecosystems. Here, we performed an investigation into longitudinal variations of mercury (Hg) contamination in the Dan River (North Carolina, United States) about 17 and 29 months after a February 2014 coal ash spill incident, in which the reported Hg concentrations in the spilled coal ash (210 ng/g) were 1-2 orders of magnitude higher than the river sediments (2-61 ng/g). We examined total Hg (THg) and methyl Hg (MeHg) in sediments from 0 to 65 km downstream of the spill, and found that most of the variations of THg and MeHg in surface sediments (0-16 cm) could be well accounted by the organic matter content and appeared to be not contaminated by Hg derived from coal ash.
View Article and Find Full Text PDFTo explore the relationship between symptoms of attention-deficit hyperactivity disorder (ADHD), symptoms of binge eating disorder, and body mass index (BMI) among students at a southern university. Two hundred seventy-seven college students. Between January 31, 2013 and March 27, 2013, participants completed the Adult ADHD Self-Report Scale (ASRS) Screener and the Binge Eating Scale (BES) in addition to permitting researchers to measure their height and weight.
View Article and Find Full Text PDFPurpose: Colorectal cancer (CRC) is the third leading cause of cancer death in the United States, yet 1 in 3 Americans have never been screened for CRC. Annual screening using fecal immunochemical tests (FITs) is often a preferred modality in populations experiencing CRC screening disparities. Although multiple studies evaluate the clinical effectiveness of FITs, few studies assess patient preferences toward kit characteristics.
View Article and Find Full Text PDFObjective: Traditional analytic approaches may oversimplify the mechanisms by which interventions effect change. Transition probability models can quantify both symptom improvement and sustained reduction in symptoms. We sought to quantify transition probabilities between higher and lower states for four outcome variables and to compare two treatment arms with respect to these transitions.
View Article and Find Full Text PDFA short form of the Trauma Symptom Checklist for Young Children was derived from the original 90 items. An exploratory factor analysis of each factor identified the four items from each of the original factors with the highest eigenvalues. These items were subjected to confirmatory factor analysis.
View Article and Find Full Text PDFWe describe prior use and willingness to try complementary and alternative medicine (CAM) among 401 veterans experiencing chronic noncancer pain and explore differences between CAM users and nonusers. Participants in a randomized controlled trial of a collaborative intervention for chronic pain from five Department of Veterans Affairs (VA) primary care clinics self-reported prior use and willingness to try chiropractic care, massage therapy, herbal medicines, and acupuncture. Prior CAM users were compared with nonusers on demographic characteristics, pain-related clinical characteristics, disease burden, and treatment satisfaction.
View Article and Find Full Text PDFObjective: We assessed primary care clinician-provided guideline-concordant care as documented in patients' medical records, predictors of documented guideline-concordant care, and its association with pain-related functioning. Patients were participants in a randomized trial of collaborative care for chronic musculoskeletal pain. The intervention featured patient and primary care clinician education, symptom monitoring and feedback to clinicians by the intervention team.
View Article and Find Full Text PDFUnlabelled: The goal of this study was to examine relationships between substance use disorder (SUD) history and 12-month outcomes among primary care patients with chronic noncancer pain (CNCP). Patients were enrolled in a randomized trial of collaborative care intervention (CCI) versus treatment as usual (TAU) to improve pain-related physical and emotional function. At baseline, 72 of 362 patients (20.
View Article and Find Full Text PDFObjective: To describe the prevalence and psychological correlates of traumatic brain injury (TBI) among injured male combatants in the Iraq conflict.
Participants: A total of 781 men injured during military combat between September 2004 and February 2005.
Main Outcome Measures: Mental health diagnosis (ICD-9 290-319), particularly posttraumatic stress disorder and mood/anxiety disorders, assigned through November 2006.
Background: Chronic pain is costly to individuals and the healthcare system, and is often undertreated. Collaborative care models show promise for improving treatment of patients with chronic pain. The objectives of this article are to report the incremental benefit and incremental health services costs of a collaborative intervention for chronic pain from a veterans affairs (VA) healthcare perspective.
View Article and Find Full Text PDFObjective: Posttraumatic stress disorder (PTSD) is an important source of morbidity in military personnel, but its relationship with characteristics of battle injury has not been well defined. The aim of this study was to characterise the relationship between injury-related factors and PTSD among a population of battle injuries.
Patients And Methods: A total of 831 American military personnel injured during combat between September 2004 and February 2005 composed the study population.
Limited research exists on the relationship between physical injury and PTSD within military populations. The present study assessed postinjury rates of PTSD and other psychological correlates among battle and non-battle injuries. A total of 1,968 men (831 battle injuries and 1,137 nonbattle injuries) injured between September 2004 and February 2005 during Operation Iraqi Freedom (OIF) composed the study sample.
View Article and Find Full Text PDFContext: Chronic pain is common in primary care patients and is associated with distress, disability, and increased health care use.
Objective: To assess whether a collaborative intervention can improve chronic pain-related outcomes, including comorbid depression severity, in a Department of Veterans Affairs primary care setting.
Design, Setting, And Participants: Cluster randomized controlled trial of a collaborative care assistance with pain treatment intervention vs treatment as usual at 5 primary care clinics of 1 Department of Veterans Affairs Medical Center.
Objectives: The primary objective of this study was to identify veterans affairs (VA) primary care clinicians' attitudes regarding chronic pain treatment. A secondary objective was to explore relationships between clinician and practice characteristics and an objective measure of opioid prescribing rates.
Design: Cross-sectional study of clinician survey and pharmacy data.