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Members of Sinistroporomonorchis Wee, Cutmore, Pérez-del-Olmo & Cribb, 2020 represent a small group of trematodes belonging to the Monorchiidae Odhner, 1911 with 5 species described from mugilid hosts. Specimens consistent with the generic concept of Sinistroporomonorchis were obtained from Floridichthys polyommus (Cyprinodontidae); most of them were juveniles from 4 localities within the Yucatán Peninsula. After a detailed morphological examination including scanning electron microscopy images and a principal component analysis, the specimens collected represented a new species, Sinistroporomonorchis bolini n. sp. The new species can be differentiated by the presence of an overall large pharynx including the proportion of pharynx width to oral sucker width, a uterus arranged in 2 main lateral fields, and by presenting robust caeca. In addition, sequences of the 28S of large subunit of nuclear ribosomal RNA and cox1 of the mitochondrial DNA were obtained. Phylogenetic trees inferred from each dataset, placed all the specimens in a monophyletic clade, confirming that the isolates belonged to the same species. The new species is the sixth described for the genus Sinistroporomonorchis, the fifth described from the Yucatán Peninsula and the first described from a non-mugilid host.
Trematodes are one of the most abundant and diverse groups of platyhelminths. They parasitize all major groups of vertebrates as definitive hosts and therefore play an important role in ecosystem composition. It is estimated that 18,000 to 25,000 species of trematodes exist worldwide, of which 685 have been reported in Mexico. Although this group is an integral part of ecosystems, there are still no studies that highlight the importance of parasites, especially in conservation approaches. Here, we recompiled information on the occurrence and available genetic data of trematodes in Mexico to estimate the specific richness of their representation across the Protected Areas (PAs) and provinces of Mexico. We consulted national and international databases (e.g., GBIF, CONABIO, CNHE-UNAM) and genetic repositories (e.g., GenBank) to generate curated datasets. We obtained 6,780 records that represent 99% of species reported in Mexico (680 species), of which only 10.2% are included in PAs. For genetic data, we found information from five nuclear regions (28S, 18S, ITS1, ITS2 and 5.8S) and two mitochondrial genes (COI and NAD1) for 118 species, of which only 3.5% were associated with PAs. With these results, we provide a spatial distribution of records (occurrence and genetic data) of trematodes present in Mexico and its PAs and identify poorly represented biogeographic provinces (e.g., Sierra Madre del Sur). We also highlight that this is the first study in Mexico to include this group in a conservation approach, and we record valuable information for future studies.
Physical health conditions are more common in individuals with autism. Some, like epilepsy, have considerable evidence supporting their increased prevalence, but many diseases lack literature to make strong conclusions.
Aims
To investigate the prevalence of physical health comorbidities in autism.
Method
We undertook a nested cross-sectional study, using a sample from the National Centre for Mental Health database. It included participants from England and Wales who reported a clinician-made diagnosis of autism (n = 813), and a control sample without autism or mental illness (n = 2781). Participants had provided a medical history at enrolment. Analysis was carried out by binomial logistic regressions controlling for age, gender, smoking status, and antipsychotic and mood stabiliser use. A subanalysis of individuals with concurrent intellectual disability (n = 86) used binomial logistic regression with the same control variables.
Results
Many physical health conditions were significantly more common in autism. Sixteen out of 28 conditions showed increased odds, with the highest odds ratios observed for liver disease, chronic obstructive pulmonary disease, kidney disease, osteoporosis and rheumatoid arthritis. A subanalysis demonstrated a similar pattern of physical health in individuals with autism with and without concurrent intellectual disability. Some conditions, including osteoporosis, hyperthyroidism, head injury and liver disease, had larger odds ratios in individuals with concurrent intellectual disability.
Conclusions
Physical health conditions occur more commonly in individuals with autism, and certain conditions are further increased in those with concurrent intellectual disability. Our findings contribute to prior evidence, including novel associations, and suggest that people with autism are at greater risk of physical health problems throughout adulthood.
Background: Duchenne muscular dystrophy (DMD) is caused by DMD gene mutations. Delandistrogene moxeparvovec is an investigational gene transfer therapy, developed to address the underlying cause of DMD. We report findings from Part 1 (52 weeks) of the two-part EMBARK trial (NCT05096221). Methods: Key inclusion criteria: Ambulatory patients aged ≥4-<8 years with a confirmed DMD mutation within exons 18–79 (inclusive); North Star Ambulatory Assessment (NSAA) score >16 and <29 at screening. Eligible patients were randomized 1:1 to intravenous delandistrogene moxeparvovec (1.33×1014 vg/kg) or placebo. The primary endpoint was change from baseline in NSAA total score to Week 52. Results: At Week 52 (n=125), the primary endpoint did not reach statistical significance, although there was a nominal difference in change from baseline in NSAA total score in the delandistrogene moxeparvovec (2.6, n=63) versus placebo groups (1.9, n=61). Key secondary endpoints (time to rise, micro-dystrophin expression, 10-meter walk/run) demonstrated treatment benefit in both age groups (4-5 and 6-7 years; p<0.05).There were no new safety signals, reinforcing the favorable and manageable safety profile observed to date. Conclusions: Based on the totality of functional assessments including the timed function tests, treatment with delandistrogene moxeparvovec indicates beneficial modification of disease trajectory.
We aim to analyze the efficacy and safety of TMS on cognition in mild cognitive impairment (MCI), Alzheimer’s disease (AD), AD-related dementias, and nondementia conditions with comorbid cognitive impairment.
Design:
Systematic review, Meta-Analysis
Setting:
We searched MEDLINE, Embase, Cochrane database, APA PsycINFO, Web of Science, and Scopus from January 1, 2000, to February 9, 2023.
Participants and interventions:
RCTs, open-label, and case series studies reporting cognitive outcomes following TMS intervention were included.
Measurement:
Cognitive and safety outcomes were measured. Cochrane Risk of Bias for RCTs and MINORS (Methodological Index for Non-Randomized Studies) criteria were used to evaluate study quality. This study was registered with PROSPERO (CRD42022326423).
Results:
The systematic review included 143 studies (n = 5,800 participants) worldwide, encompassing 94 RCTs, 43 open-label prospective, 3 open-label retrospective, and 3 case series. The meta-analysis included 25 RCTs in MCI and AD. Collectively, these studies provide evidence of improved global and specific cognitive measures with TMS across diagnostic groups. Only 2 studies (among 143) reported 4 adverse events of seizures: 3 were deemed TMS unrelated and another resolved with coil repositioning. Meta-analysis showed large effect sizes on global cognition (Mini-Mental State Examination (SMD = 0.80 [0.26, 1.33], p = 0.003), Montreal Cognitive Assessment (SMD = 0.85 [0.26, 1.44], p = 0.005), Alzheimer’s Disease Assessment Scale–Cognitive Subscale (SMD = −0.96 [−1.32, −0.60], p < 0.001)) in MCI and AD, although with significant heterogeneity.
Conclusion:
The reviewed studies provide favorable evidence of improved cognition with TMS across all groups with cognitive impairment. TMS was safe and well tolerated with infrequent serious adverse events.
We study the interaction between a positron beam in the single-particle regime in an interferometric configuration and a microwave electromagnetic field. We discuss the conditions under which quantum interference can be affected by the field and we outline its possible experimental study in the framework of QUantum interferometry and gravitation with Positrons and LASers (QUPLAS) experiment.
Physical and recreational activities are behaviors that may modify risk of late-life cognitive decline. We sought to examine the role of retrospectively self-reported midlife (age 40) physical and recreational activity engagement – and self-reported change in these activities from age 40 to initial study visit – in predicting late-life cognition.
Method:
Data were obtained from 898 participants in a longitudinal study of cognitive aging in demographically and cognitively diverse older adults (Age: range = 49–93 years, M = 75, SD = 7.19). Self-reported physical and recreational activity participation at age 40 and at the initial study visit were quantified using the Life Experiences Assessment Form. Change in activities was modeled using latent change scores. Cognitive outcomes were obtained annually (range = 2–17 years) using the Spanish and English Neuropsychological Assessment Scales, which measure verbal episodic memory, semantic memory, visuospatial processing, and executive functioning.
Results:
Physical activity engagement at age 40 was strongly associated with cognitive performance in all four domains at the initial visit and with global cognitive slope. However, change in physical activities after age 40 was not associated with cognitive outcomes. In contrast, recreational activity engagement – both at age 40 and change after 40 – was predictive of cognitive intercepts and slope.
Conclusions:
Retrospectively self-reported midlife physical and recreational activity engagement were strongly associated with late-life cognition – both level of performance and rate of future decline. However, the data suggest that maintenance of recreational activity engagement (e.g., writing, taking classes, reading) after age 40 is more strongly associated with late-life cognition than continued maintenance of physical activity levels.
Edited by
Dennis S. Chi, Memorial Sloan-Kettering Cancer Center, New York,Nisha Lakhi, Richmond University Medical Center, Staten Island,Nicoletta Colombo, University of Milan-Bicocca
Treatment of platinum-resistant ovarian cancer poses a challenge to oncologists, as this type of cancers is incurable, and no optimal or standard treatment exists. The available cytotoxic drugs show similar progression-free survival and overall survival rates; therefore, oncologists should consider each case individually and assess not only efficacy but also the possible impact on patient’s quality of life and risks of toxicity. This chapter explores the different treatment options for platinum-resistant ovarian cancer.
The “Post-COVID Syndrome” affects approximately 10% of people who have been infected with Covid-19. These people have a physical and mental impact.
Objectives
The objective of this study is to analyze factors related to poorer mental health in these patients from primary health care.
Methods
Cross-sectional study. The study population was post-COVID-19 patients aged 18 years or older and treated by Primary Health Care (PHC). The main variable was Affective state through the Hospital Anxiety and Depression Scale (HADS) questionnaire. The rest of the variables were: Socio-demographic variables, number of residual symptoms, cognitive using the Montreal Cognitive Assessment (MoCA), physical functioning variable will be measured by Sit to Stand Test and Sleep quality through the Insomnia Severity Index (ISI). A bivariate analysis and also a lineal multivariate model were developed. Ethics approval was granted by the Clinical Research Ethics Committee of Aragón (PI21/139 and PI21/454).
Results
A total of 100 individuals participated, of whom, 80 were women and 20 were men. The median scores in HADS was 16 and the interquartile range was 12. Multilevel analysis shows that better physical functioning (sit to stand test) and worse sleep quality (Insomnia severity index) are predictors of worse affective state. The models explain 36.5% of the HADS variance.
Conclusions
It is relevant to take account these variables in the treatment of the affective state of patients with long covid.
Home Treatment (HT) teams are among the better-studied options to reduce admission at the hospital, having been described as an alternative to hospitalization in patients with schizophrenia. There may be certain risk factors which has already been described such as living alone (Dean and Gadd, BMJ, 1990; 301, 1021–1023; Schnyder et al., Acta Psychiatr. Scand. 1999; 99, 179–187), lack of awareness of the illness, uncooperativeness (Cotton et al., BMC Psychiatry, 2007; 7, 52) and fewer visits carried out (Morgan et al., Aust. New Zeal. J. Psychiatry,2006; 40, 683–690) which together can negatively influence the possibility of conducting intensive home follow-up and, therefore, increase the likelihood of hospitalization.
Objectives
To describe de relative contribution of several risk factors to patient hospitalization related to the possibility of conducting intensive home follow-up of patients diagnosed with Schizophrenia following home treatment. Second, to determine de risk of hospitalization related to the possibility of conducting intensive home follow-up according to the presence of one or more risk factors of patients diagnosed with Schizophrenia following home treatment.
Methods
All patients with schizophrenia who were visited by a home treatment team in Barcelona between January 2017 and December 2021 were included in the study. To assess whether there was an increased risk of hospitalization associated with factors such as living alone, uncooperativeness (PANSS G8 item >= 4) and ≤1 home visit, two bivariate logistic regression analyses were conducted. We studied these factors as independent variables to assess the relative contribution to the risk of hospitalization, and we studied if the presence of 1, 2, 3 or 4 of these risk factors as independent variables worsened the risk of hospitalization.
Results
Uncooperativeness shows the highest contribution to the risk of hospitalization, followed by ≤ 1 home visit, lack of insight and living alone, all results reaching significance (p=0.000).
There is an increase in the risk of hospitalization depending of the presence of 1,2,3 or 4 of these risk factors (1 risk factor (Odds Ratio = 1.21), 2 risk factors (Odds Ratio = 5.28), 3 risk factors (Odds ratio = 13.53), 4 risk factors (Odds ratio = 29.18).
Conclusions
There are a number of factors directly related to the possibility of conducting intensive follow-up that appear relevant in the case of psychotic patients in acute crisis treated at home. This set of variables are the lack of awareness of the illness, lack of collaboration, living alone and the number of visits that have been made, all with statistically significant differences in our study. These factors together also greatly increase the risk of hospitalization, becoming almost 30 times more likely when these 4 factors are present.
Up to 50% of patients with brain tumors experience psychiatric symptoms, and rates up to 80% have been reported in malignant neoplasms such as glioblastoma multiforme (GBM). Still, clinical presentation as mania-like syndromes is a rare phenomenon, mainly occurring when frontal structures are compromised.
We present the case of a 42-year-old woman who was admitted to our hospital due to manic symptoms coinciding with a recurrence of a bifrontal GBM, for which she underwent surgery 5 months prior.
Objectives
1) To describe the clinical particularities of this case, focusing on the differential diagnosis.
2) To review the association between manic symptoms and frontal dysfunction caused by brain tumors, with special interest on GBM.
Methods
A review of the patient’s clinical history and complementary tests performed was carried out. Likewise, we reviewed the available literature in relation to manic symptoms related to brain tumors.
Results
The patient’s GBM recurrence presented with late onset symptoms of mania, including euphoric mood, increased spending, ideas of grandiosity and hyper-religiosity. She had no previous psychiatric history but, interestingly, she had an extensive affective burden in her family, with 4 consummated suicides. However, she also presented other clinical signs, such as disorientation, perseveration, mild memory impairment and stereotyped motor behaviors, that pointed to relevant frontal lobe dysfunction, suggesting Moria as a possible contribution for the symptoms described.
Manic symptoms in the context of brain tumors appear in 7-15% of patients with psychiatric symptoms, usually associated with right frontal dysfunction (75% of cases). Bifrontal affectation, such as this patient, is only described in 6% of cases. Although fast growing, malignant tumors have been associated with higher rates of psychiatric symptoms, no correlation has been described between these and brain tumor histology.
Conclusions
- The presence of atypical manic symptoms, such as those presented in this case, should raise clinical concern for secondary mania.
- Moria shares similarities with mania, including mood elevation, tendency to hilarity or hyper-sexuality, that may hinder diagnosis of patients with frontal dysfunction.
- This case outlines the difficulties in making a differential diagnosis in patient with both manic and neurological signs, and highlights the implication of frontal structures in the development of manic symptoms.
The coronavirus disease 2019 (COVID-19) pandemic continues to cause significant morbidity and mortality worldwide. Since a large portion of the world’s population is currently unvaccinated or incompletely vaccinated and has limited access to approved treatments against COVID-19, there is an urgent need to continue research on treatment options, especially those at low cost and which are immediately available to patients, particularly in low- and middle-income countries. Prior in vitro and observational studies have shown that fluoxetine, possibly through its inhibitory effect on the acid sphingomyelinase/ceramide system, could be a promising antiviral and anti-inflammatory treatment against COVID-19.
Objectives
The aim of this sudy was to test the potential antiviral and anti-inflammatory activities of fluoxetine against SARS-CoV-2 in a K18-hACE2 mouse model of infection, and against several variants of concern in vitro, and test the hypothesis of the implication of ceramides and/or their derivatives hexosylceramides.
Methods
We evaluated the potential antiviral and anti-inflammatory activities of fluoxetine in a K18-hACE2 mouse model of SARS-CoV-2 infection, and against variants of concern in vitro, i.e., SARS-CoV-2 ancestral strain, Alpha B.1.1.7, Gamma P1, Delta B1.617 and Omicron BA.5.
Results
Fluoxetine, administrated after SARS-CoV-2 infection, significantly reduced lung tissue viral titres (Figure 1) and expression of several inflammatory markers (i.e., IL-6, TNFα, CCL2 and CXCL10) (Figure 2). It also inhibited the replication of all variants of concern in vitro. A modulation of the ceramide system in the lung tissues, as reflected by the increase in the ratio HexCer 16:0/Cer 16:0 in fluoxetine-treated mice, may contribute to explain these effects (Figure 3).
Image:
Image 2:
Image 3:
Conclusions
Our findings demonstrate the antiviral and anti-inflammatory properties of fluoxetine in a K18-hACE2 mouse model of SARS-CoV-2 infection, and its in vitro antiviral activity against variants of concern, establishing fluoxetine as a very promising candidate for the prevention and treatment of SARS-CoV-2 infection and disease pathogenesis.
Long COVID patients have experienced a decline in their quality of life caused, in part but not wholly, by its negative emotional impact. Some of the most prevalent mental symptoms presented by Long COVID patients are anxiety, depression and sleep disorders.
Objectives
The objective of this study is to increase understanding of the affective state of people diagnosed with Long COVID, the evolution and associated factors.
Methods
Longitudinal study of three months of duration. The study population was 100 post-COVID-19 patients aged 18 years or older (80 women and 20 men). The main variable was the affective state through the Hospital Anxiety and Depression Scale (HADS) questionnaire. The rest of the collected variables were: Socio-demographic variables, number of residual symptoms, cognitive functioning using the Montreal Cognitive Assessment (MoCA), physical functioning variable measured by Sit to Stand Test and Sleep quality through the Insomnia Severity Index (ISI). A statistical analysis comparing baseline and 3months follow up measures were performed, using a Student T for related samples statistical. A lineal regression analysing associated factors to a reduction in HADS score was also performed. Ethics approval was granted by the Clinical Research Ethics Committee of Aragón (PI21/139 and PI21/454).
Results
At baseline the score in anxiety, depression and total score were 9,10 (SD: 4,67), 8,25 (SD: 4,51) and 17,35 (SD: 8,43) respectively, and 74% of the participants were considered cases. At three months, there is a slightly decrease but not significative in the score of HADS, both in anxiety, depression and total score (pvalue 0,465; 0,236; and 0,216 respectively). 64,4% of the participants had a positive diagnosis of depression/anxiety. About the rest of the variables there were also a slight decrease but without being significant There was not a predictive model that explained the decrease in the HADS score.
Conclusions
The evolution of the people suffering long covid is very slow along the time, and also the affective state.
Several hypotheses may explain the association between substance use, posttraumatic stress disorder (PTSD), and depression. However, few studies have utilized a large multisite dataset to understand this complex relationship. Our study assessed the relationship between alcohol and cannabis use trajectories and PTSD and depression symptoms across 3 months in recently trauma-exposed civilians.
Methods
In total, 1618 (1037 female) participants provided self-report data on past 30-day alcohol and cannabis use and PTSD and depression symptoms during their emergency department (baseline) visit. We reassessed participant's substance use and clinical symptoms 2, 8, and 12 weeks posttrauma. Latent class mixture modeling determined alcohol and cannabis use trajectories in the sample. Changes in PTSD and depression symptoms were assessed across alcohol and cannabis use trajectories via a mixed-model repeated-measures analysis of variance.
Results
Three trajectory classes (low, high, increasing use) provided the best model fit for alcohol and cannabis use. The low alcohol use class exhibited lower PTSD symptoms at baseline than the high use class; the low cannabis use class exhibited lower PTSD and depression symptoms at baseline than the high and increasing use classes; these symptoms greatly increased at week 8 and declined at week 12. Participants who already use alcohol and cannabis exhibited greater PTSD and depression symptoms at baseline that increased at week 8 with a decrease in symptoms at week 12.
Conclusions
Our findings suggest that alcohol and cannabis use trajectories are associated with the intensity of posttrauma psychopathology. These findings could potentially inform the timing of therapeutic strategies.
Current psychiatric diagnoses, although heritable, have not been clearly mapped onto distinct underlying pathogenic processes. The same symptoms often occur in multiple disorders, and a substantial proportion of both genetic and environmental risk factors are shared across disorders. However, the relationship between shared symptoms and shared genetic liability is still poorly understood.
Aims
Well-characterised, cross-disorder samples are needed to investigate this matter, but few currently exist. Our aim is to develop procedures to purposely curate and aggregate genotypic and phenotypic data in psychiatric research.
Method
As part of the Cardiff MRC Mental Health Data Pathfinder initiative, we have curated and harmonised phenotypic and genetic information from 15 studies to create a new data repository, DRAGON-Data. To date, DRAGON-Data includes over 45 000 individuals: adults and children with neurodevelopmental or psychiatric diagnoses, affected probands within collected families and individuals who carry a known neurodevelopmental risk copy number variant.
Results
We have processed the available phenotype information to derive core variables that can be reliably analysed across groups. In addition, all data-sets with genotype information have undergone rigorous quality control, imputation, copy number variant calling and polygenic score generation.
Conclusions
DRAGON-Data combines genetic and non-genetic information, and is available as a resource for research across traditional psychiatric diagnostic categories. Algorithms and pipelines used for data harmonisation are currently publicly available for the scientific community, and an appropriate data-sharing protocol will be developed as part of ongoing projects (DATAMIND) in partnership with Health Data Research UK.
Patients with bipolar disorder (BD) have an increased risk for cardiovascular morbimortality. Clinical risk factors, specifically for arrhythmias and sudden cardiac death remain understudied.
Objectives
This study was conducted to assess differences in cardiac conduction among BD patients.
Methods
We included patients with BD in a cross-sectional design, confirmed by structured interview, age 18 through 80. Clinical characteristics were obtained using a structured questionnaire or medical records review. ECG intervals duration and morphology were manually assessed by cardiologists and compared among clinical subgroups using Chi-square, Mann-Whitney, and Kruskall-Wallis tests. Exploratory multivariable linear and logistic regression models were fitted to adjust for potential confounders.
Results
We included 117 patients (60.7% women, 76.9% bipolar I, 50% history of psychosis, 22.6% suicide attempts). We found a significantly longer QTc interval in BD patients with hypertension (difference: 9.5 ms, p=0.006), obesity (difference: 25 ms, p=0.001), and metabolic syndrome (difference: 13 ms, p=0.007). Hypertension remained a significant predictor of longer QTc after adjusting for age, gender, and antipsychotic use (estimate 17.718, p=0.018). We observed a significantly shorter PR interval in women (difference: 6 ms, p=0.029), early age of onset (difference 6 ms, p=0.025), non-users of lithium (difference 4 ms, p=0.002), and early trauma (difference 4 ms, p=0.038). Finally, we identified significant correlations between symptom severity, blood glucose and PR interval (r=0.298, p=0.001; r=0.278, p=0.003; respectively).
Conclusions
Patients with BD and hypertension may have an increased risk for QTc prolongation. Careful cardiovascular monitoring may be warranted.
A synchronised multi-axis digital holographic interferometry set-up is presented for the study of 3-D flow fields with large density gradients. This optical configuration provides instantaneous interferograms with fine spatial resolution in six directions of projection. A regularised tomographic approach taking into account the presence of possible shock waves is furthermore considered to reconstruct 3-D density fields. Applied to a screeching under-expanded supersonic jet with helical dynamics, this set-up is used to provide dense optical phase measurements in the initial region of the jet. The jet mean density field is shown to be satisfactorily estimated with sharply resolved density gradients. In addition, an approach based on azimuthal Fourier transform and snapshot proper orthogonal decomposition (POD) applied to the instantaneous flow observations is proposed to study the main coherent dynamics of the jet. Relying on a cluster analysis of the azimuthal POD mode coefficients, a reduced dynamical model in the POD mode phase space is used as an approximation of the two observed limit cycles. A clear 3-D representation of the density field of a helical instability associated with screech mode C is then evidenced, with two equally probable directions of rotation. Switching between the two directions is reported, highlighting intermittency in the feedback loop. This helical structure is particularly seen to extend to the jet core, driving its internal dynamics and inducing out-of-phase density fluctuations between the outer and inner shear layers. These out-of-phase motions are related to the non-uniform radial distribution of fluctuation phase associated with the outer-layer Kelvin–Helmholtz instability wave.
From September 24 to October 2, 1968, two apparently unrelated events took place in an area of less than two square miles in downtown Mexico City: Duke Ellington performed in the Palacio de Bellas Artes, and the Mexican army massacred hundreds of protesting students. The student-driven movement of 1968 attracted people from different backgrounds in Mexican society. Their desire for freedom of speech and civil liberties echoed the struggles of the Civil Rights movement in the United States. Received as El rey del jazz (the King of Jazz), Ellington's visit to Mexico constituted a musical place of cultural encounters. In this essay, I explore the connections between jazz, cultural diplomacy, race, and social justice. I argue that neither paradoxes nor seeming contradictions account for the fluidity of social activism on both sides of the border and its connections with playing and listening practices of jazz; rather I look at this social phenomenon as an example of an audiotopia, borrowing Josh Kun's term for a musical space of differences where contradictions and conflicts don't cancel each other out—a kind of identificatory contact zone. I do so by setting aside nationalistic approaches to music and viewing jazz as more than an emblem of U.S. national identity; rather, I explore the transnational aspects of the cultural artifacts resulting from these exchanges and the dynamic processes that took place in Ellington's visit with and among Mexicans.
Healthcare workers (HCWs) not fulfilling the coronavirus disease 2019 (COVID-19) case definition underwent severe acute respiratory coronavirus virus 2 (SARS-CoV-2) screening. Risk of exposure, adherence to personal protective equipment (PPE), and symptoms were assessed. In total, 2,000 HCWs were screened: 5.5% were positive for SARS-CoV-2 by polymerase chain reaction (PCR). There were no differences in PPE use between SARS-CoV-2–positive and –negative HCWs (adherence, >90%). Nursing and kitchen staff were independently associated with positive SARS-CoV-2 results.