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During coronavirus infection, three non-structural proteins, nsp3, nsp4, and nsp6, are of great importance as they induce the formation of double-membrane vesicles where the replication and transcription of viral gRNA takes place, and the interaction of nsp3 and nsp4 lumenal regions triggers membrane pairing. However, their structural states are not well-understood. We investigated the interactions between nsp3 and nsp4 by predicting the structures of their lumenal regions individually and in complex using AlphaFold2 as implemented in ColabFold. The ColabFold prediction accuracy of the nsp3–nsp4 complex was increased compared to nsp3 alone and nsp4 alone. All cysteine residues in both lumenal regions were modelled to be involved in intramolecular disulphide bonds. A linker region in the nsp4 lumenal region emerged as crucial for the interaction, transitioning to a structured state when predicted in complex. The key interactions modelled between nsp3 and nsp4 appeared stable when the transmembrane regions of nsp3 and nsp4 were added to the modelling either alone or together. While molecular dynamics simulations (MD) demonstrated that the proposed model of the nsp3 lumenal region on its own is not stable, key interactions between nsp and nsp4 in the proposed complex model appeared stable after MD. Together, these observations suggest that the interaction is robust to different modelling conditions. Understanding the functional importance of the nsp4 linker region may have implications for the targeting of double membrane vesicle formation in controlling coronavirus infection.

Due to the coronavirus disease 2019 (COVID-19) pandemic, a Swiss university course called “Psychology and Migration” had to move online over the Spring semester 2021. In this course, Psychology and Education students learn about the sociocultural considerations of migration, through a theoretical, personal and artistic exploration of the subjective experience of migration, based on performing arts. As part of the main pedagogical strategies, students are invited to collectively create a short theatre play based on some selected literary texts. Under the conditions imposed by the pandemic, puppetry arts were chosen as a new tool for distance-learning. Collaborating with theatre professionals, the students created a short play, and performed it online using sock puppets, image theatre or object theatre. Using data collected during the course (video recordings of online sessions and students’ diaries), this article explores the critical process of reduction and expansion, and the (potentially) productive tensions that the course creates. It analyses two main appropriation modes for course students: in adaptative appropriation, students aim to reduce these tensions by adapting to the perceived expectations of teachers; in transformative appropriation, students creatively use possibilities offered by the course to conduct a personal exploration, integrating theories with their own experiences and questions.

In diesem Beitrag wird der Frage nachgegangen, wie angehende DaF-Lehrende ihre Lernerfahrungen im performativen Online-Workshop bewerten. Zu diesem Zweck wurden verschiedene Drama-Aktivitäten per Videokonferenz mit Studierenden aus Deutschland und Serbien im Rahmen von Lehrveranstaltungen durchgeführt. Am Ende des Sommersemesters 2021 wurden sieben Studierende einzeln interviewt. Die leitfadengestützten Interviews wurden nach der zusammenfassenden Inhaltsanalyse von Mayring (2010) qualitativ ausgewertet. Die Ergebnisse weisen darauf hin, dass durch einen dramapädagogischen Ansatz Unterrichtsatmosphäre, Interaktion, Kommunikation, soziale Distanz und Lernmotivation optimiert sowie Sprechangst und Hemmungen abgebaut werden können.

Background The COVID-19 pandemic exacerbated existing health disparities and disproportionately affected vulnerable individuals and communities (e.g., low-income, precariously housed or in institutional settings, racialized, migrant, refugee, 2SLBGTQ+). Despite their higher risk of infection and sub-optimal access to healthcare, Canada’s COVID-19 vaccination strategy focused primarily on age, as well as medical and occupational risk factors. Methods We conducted a mixed-methods constant comparative qualitative analysis of epidemiological data from a national database of COVID-19 cases and vaccine coverage in four Canadian jurisdictions. Jurisdictional policies, policy updates, and associated press releases were collected from government websites, and qualitative data were collected through 34 semi-structured interviews of key informants from nine Canadian jurisdictions. Interviews were coded and analyzed for themes and patterns. Results COVID-19 vaccines were rolled out in Canada in three phases, each accompanied by specific challenges. Vaccine delivery systems typically featured large-venue mass immunization sites that presented a variety of barriers for those from vulnerable communities. The engagement and targeted outreach that featured in the later phases were driven predominantly by the efforts of community organizations and primary care providers, with limited support from provincial governments. Conclusions While COVID-19 vaccine rollout in Canada is largely considered a success, such an interpretation is shaped by the metrics chosen. Vaccine delivery systems across Canada need substantial improvements to ensure optimal uptake and equitable access for all. Our findings suggest a more equitable model for vaccine delivery featuring early establishment of local barrier-free clinics, culturally safe and representative environment, as well as multi-lingual assistance, among other vulnerability-sensitive elements.

Wastewater-based SARS-CoV-2 surveillance enables unbiased and comprehensive monitoring of defined sewersheds. We performed real-time monitoring of hospital wastewater that differentiated Delta and Omicron variants within total SARS-CoV-2-RNA, enabling correlation to COVID-19 cases from three tertiary-care facilities with2100 inpatient beds in Calgary, Canada. RNA was extracted from hospital wastewater between August/2021 and January/2022, and SARS-CoV-2 quantified using RT-qPCR. Assays targeting R203M and R203K/G204R established the proportional abundance of Delta and Omicron, respectively. Total and variant-specific SARS-CoV-2 in wastewater was compared to data for variant specific COVID-19 hospitalizations, hospital-acquired infections, and outbreaks. Ninety-six percent (188/196) of wastewater samples were SARS-CoV-2 positive. Total SARS-CoV-2 RNA levels in wastewater increased in tandem with total prevalent cases (Delta plus Omicron). Variant-specific assessments showed this increase to be mainly driven by Omicron. Hospital-acquired cases of COVID-19 were associated with large spikes in wastewater SARS-CoV-2 and levels were significantly increased during outbreaks relative to non-outbreak periods for total SARS-CoV2, Delta and Omicron. SARS-CoV-2 in hospital wastewater was significantly higher during the Omicron-wave irrespective of outbreaks. Wastewater-based monitoring of SARS-CoV-2 and its variants represents a novel tool for passive COVID-19 infection surveillance, case identification, containment, and potentially to mitigate viral spread in hospitals. This article is protected by copyright. All rights reserved.

Abstract SARS-CoV-2 infection is required for COVID-19, but many signs and symptoms of COVID-19 differ from common acute viral diseases. Currently, there are no pre- or post-exposure prophylactic COVID-19 medical countermeasures. Clinical data suggest that famotidine may mitigate COVID-19 disease, but both mechanism of action and rationale for dose selection remain obscure. We explore several plausible avenues of activity including antiviral and host-mediated actions. We propose that the principal famotidine mechanism of action for COVID-19 involves on-target histamine receptor H2 activity, and that development of clinical COVID-19 involves dysfunctional mast cell activation and histamine release.

Résumé Malgré l’attention renouvelée de plusieurs médias sur la question des risques liés à la COVID-19 au sein de diverses communautés marginalisées au Québec, nous entendons encore très peu parler des personnes âgées immigrantes et de leurs proches. Dans cette note sur les politiques et pratiques, nous aborderons l’expérience du contexte pandémique chez les personnes âgées immigrantes montréalaises et leurs réseaux. Nous présenterons d’abord quelques données sociodémographiques sur les immigrants âgés montréalais. Nous exposerons ensuite nos constats sur les impacts de la COVID-19 sur les personnes âgées immigrantes, en particulier en ce qui concerne l’accès aux soins de la santé et aux services sociaux, la proche-aidance, l’emploi et le logement, à partir de nos travaux et de la littérature en gérontologie sociale. Nous terminerons en proposant quelques recommandations qui permettraient d’améliorer l’inclusion sociale des personnes âgées immigrantes et de leurs proches, autant en matière de politiques publiques que de pratiques sur le terrain.

AbstractThe COVID-19-related stigma towards healthcare workers negatively influences their performance and job satisfaction, and well-being. The frequency of COVID-19-related stigma towards healthcare workers and its associated factors has not been sufficiently investigated. The objective was to determine the frequency and variables associated with COVID-19-related stigmatisation towards health workers in emerging-age university adults in Mexico. Analytical and cross-sectional study using an online questionnaire in 1,054 students between 18 and 29 years of age. Demographic variables, religiosity, fear of COVID-19 and stigma-discrimination related to COVID-19 towards healthcare workers were analysed. The latter was set as the dependent variable, while demographic variables, religiosity and high fear of COVID-19 were the independent variables. For the association between the variables, a binomial and logarithmic generalised linear model was designed to calculate the adjusted prevalence ratios. The proportion of high stigma-discrimination was 12.4%, and this was associated with a high fear of COVID-19 (APR 1.51, 95% CI 1.06 to 2.23). The main limitations were the cross-sectional nature, social desirability bias, non-probabilistic sampling. The results highlight the importance of establishing programmes to reduce COVID-19-related stigmatisation towards healthcare workers.

At the individual level, physical activity is one of the interventions that has been recommended to prevent burnout during COVID-19. In a post-pandemic context where organisations have considerably changed, the promotion of physical activity as an organisational intervention still appears to be very useful to prevent burnout. However, there are some paradoxes unexplained in the scientific literature that hinder our understanding of the relationship between physical activity and burnout, and ultimately, the use of physical activity as a resource to prevent burnout. The purpose of this chapter is therefore to shed light on certain contradictions regarding physical activity and its potential benefits to help prevent burnout through the recovery process. Specifically, we attempt to provide some answers to the following critically important questions emerging from our reading of conflicting studies on the relationship between physical activity and burnout: Is physical activity practiced during work time as beneficial for health as when done during non-work time? Do only sedentary office workers benefit from occupational physical activity?

The ongoing COVID-19 pandemic and associated mitigation measures have disrupted global systems that support the health, food and nutrition security, and livelihoods of billions of people. These disruptions have likewise affected the small-scale fishery (SSF) sector, disrupting SSF supply chains and exposing weaknesses in the global seafood distribution system. To inform future development of adaptive capacity and resilience in the sector, it is important to understand how supply chain actors are responding in the face of a macroeconomic shock. Comparing across seven SSF case studies in four countries, we explore how actors are responding to COVID-19 disruptions, identify constraints to adaptive responses, and describe patterns of disruption and response across cases. In all cases examined, actors shifted focus to local and regional distribution channels and particularly drew on flexibility, organization, and learning to re-purpose pre-existing networks and use technology to their advantage. Key constraints to reaching domestic consumers included domestic restrictions on movement and labor, reduced spending power amongst domestic consumers, and lack of existing distribution channels. In addition, the lack of recognition of SSFs as essential food-producers and inequities in access to technology hampered efforts to continue local seafood supply. We suggest that the initial impacts from COVID-19 highlight the risks in of over-reliance on global trade networks. The SSFs that were able to change strategies most successfully had local organizations and connections in place that they leveraged in innovative ways. As such, supporting local and domestic networks and flexible organizations within the supply chain may help build resilience in the face of future macroeconomic shocks. Importantly, bolstering financial wellbeing and security within the domestic market both before and during such large-scale disruptions is crucial for supporting ongoing supply chain operations and continued food provision during macroeconomic crises.