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1.
Journalism ; 2023.
Article in English | Web of Science | ID: covidwho-2323536

ABSTRACT

Using a labour process lens, this research focuses on the structured antagonism that characterises the employment relationship. This article seeks to further our understanding of how news organisations employ control strategies to extract the labour power of journalists and achieve organisational objectives, and we pay particular attention to the role of editors in this regard. We also explore the responses of journalists as workers to managerial control which can include accommodation, resistance, compliance, or consent. The findings are based on an empirical case study of a local newspaper incorporating interviews with editors and journalists. The case study reveals how journalists' work intensified with the turn to digital content, and because of reduced staffing since COVID-19, but editors ensured high levels of productivity through distribution of digital analytics and constant monitoring.

3.
Proceedings of the Association for Information Science and Technology ; 59(1):192-204, 2022.
Article in English | Scopus | ID: covidwho-2085193

ABSTRACT

In order to help adolescents cope with loneliness during the social distancing and isolation imposed by the COVID-19 pandemic, we designed a conversational agent programmed to distract users from negative thoughts and advise them on strategies to improve their wellbeing. In order to assess the effects of the agent intervention on adolescent participants, we performed quantitative analysis of their self-reported mood states and qualitative analysis of their subjective views and opinions on the agent to help us understand their experiences. Trends in the quantitative data point to minimal changes in participants' wellbeing and loneliness after interactions with the experimental agent. However, qualitative data on adolescent experiences suggests short and long-term positive effects of the experimental interactions. In reporting our findings, we aim to bring attention to the importance of the qualitative data for understanding human experiences with technology, as well as the limitations of the instruments developed in the field of psychology for human-information interaction research. 85th Annual Meeting of the Association for Information Science & Technology ;Oct. 29 – Nov. 1, 2022 ;Pittsburgh, PA. Author(s) retain copyright, but ASIS&T receives an exclusive publication license.

4.
Pharmacoepidemiology and Drug Safety ; 31:379-380, 2022.
Article in English | Web of Science | ID: covidwho-2084327
5.
Front Immunol ; 13: 963023, 2022.
Article in English | MEDLINE | ID: covidwho-2022747

ABSTRACT

The COVID-19 pandemic response has shown how vaccine platform technologies can be used to rapidly and effectively counteract a novel emerging infectious disease. The speed of development for mRNA and vector-based vaccines outpaced those of subunit vaccines, however, subunit vaccines can offer advantages in terms of safety and stability. Here we describe a subunit vaccine platform technology, the molecular clamp, in application to four viruses from divergent taxonomic families: Middle Eastern respiratory syndrome coronavirus (MERS-CoV), Ebola virus (EBOV), Lassa virus (LASV) and Nipah virus (NiV). The clamp streamlines subunit antigen production by both stabilising the immunologically important prefusion epitopes of trimeric viral fusion proteins while enabling purification without target-specific reagents by acting as an affinity tag. Conformations for each viral antigen were confirmed by monoclonal antibody binding, size exclusion chromatography and electron microscopy. Notably, all four antigens tested remained stable over four weeks of incubation at 40°C. Of the four vaccines tested, a neutralising immune response was stimulated by clamp stabilised MERS-CoV spike, EBOV glycoprotein and NiV fusion protein. Only the clamp stabilised LASV glycoprotein precursor failed to elicit virus neutralising antibodies. MERS-CoV and EBOV vaccine candidates were both tested in animal models and found to provide protection against viral challenge.


Subject(s)
COVID-19 , Middle East Respiratory Syndrome Coronavirus , Viral Vaccines , Animals , Antibodies, Neutralizing , Antibodies, Viral , Humans , Pandemics , Spike Glycoprotein, Coronavirus , Technology , Vaccines, Subunit
6.
Aust Crit Care ; 34(3): 217-225, 2021 05.
Article in English | MEDLINE | ID: covidwho-1530621

ABSTRACT

BACKGROUND: Patients on extracorporeal membrane oxygenation (ECMO) often require prolonged periods of bed rest owing to their severity of illness along with the care required to maintain the position and integrity of the ECMO cannula. Many patients on ECMO receive passive exercises, and rehabilitation is often delayed owing to medical instability, with a high proportion of patients demonstrating severe muscle weakness. The physiological effects of an intensive rehabilitation program started early after ECMO commencement remain unknown. OBJECTIVES: The primary objective of this study was to describe the respiratory and haemodynamic effects of early intensive rehabilitation compared with standard care physiotherapy over a 7-d period in patients requiring ECMO. METHODS: This was a physiological substudy of a multicentre randomised controlled trial conducted in one tertiary referral hospital. Consecutive adult patients undergoing ECMO were recruited. Respiratory and haemodynamic parameters, along with ECMO settings, were recorded 30 min before and after each session and continuously during the session. In addition, the minimum and maximum values for these parameters were recorded outside of the rehabilitation or standard care sessions for each 24-h period over the 7 d. The number of minutes of exercise per session was recorded. RESULTS: Fifteen patients (mean age = 51.5 ± standard deviation of 14.3 y, 80% men) received ECMO. There was no difference between the groups for any of the respiratory, haemodynamic, or ECMO parameters. The minimum and maximum values for each parameter were recorded outside of the rehabilitation or standard care sessions. The intensive rehabilitation group (n = 7) spent more time exercising per session than the standard care group (n = 8) (mean = 28.7 versus 4.2 min, p < 0.0001). Three patients (43%) in the intensive rehabilitation group versus none in the standard care group mobilised out of bed during ECMO. CONCLUSIONS: In summary, early intensive rehabilitation of patients on ECMO had minimal effect on physiological parameters.


Subject(s)
COVID-19 , Extracorporeal Membrane Oxygenation , Adult , Female , Humans , Male , Middle Aged , Physical Therapy Modalities , Pilot Projects , Retrospective Studies , Treatment Outcome
7.
Journal of Cystic Fibrosis ; 20:S57, 2021.
Article in English | EMBASE | ID: covidwho-1361552

ABSTRACT

Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) has disrupted clinical trials. The European Cystic Fibrosis Society-Clinical Trials Network (ECFS-CTN) tracked disruption to CF trials via regular surveys to adult and paediatric clinics of member sites throughout 2020. We published preliminary results to May 2020 (doi: 10.1183/13993003.02114-2020). Here we report updated data to the end of 2020. Ongoing trials were heavily impacted up to May. Trial participant visits, new enrollment and monitoring visits were widely banned, with frequent home delivery of study drug (Table 1). From June to December, trial visits, new enrollment and onsite monitoring were mostly allowed, and home delivery of study drug dropped accordingly. The set-up of new trials was heavily impacted in March but recovered substantially from June on. Some sites had reduced staff available to work on CF trials. Table 1 presents how remote visits and measures were used by sites from June to December. Much of the early trial disruption resolved by end 2020;however, challenges remain to protect the progress of clinical research in CF during the pandemic.

8.
American Journal of Pharmaceutical Education ; 85(5):323-327, 2021.
Article in English | Web of Science | ID: covidwho-1271325

ABSTRACT

As a result of restrictions imposed by COVID-19, many researchers have responded to the call for remote, advanced pharmacy practice experiences (APPEs) that do not involve direct patient care. The influx of materials on online pedagogy may be difficult for new preceptors to digest while familiarizing themselves with the APPE program. To complement the available guidance on remote learning for new preceptors, we describe our experiences with implementing a remote, research-focused APPE during COVID-19. Common challenges are discussed and potential solutions that may help new preceptors anticipate and overcome barriers to achieving the educational outcomes of researchfocused APPE are proposed.

9.
Bjog-an International Journal of Obstetrics and Gynaecology ; 128:37-38, 2021.
Article in English | Web of Science | ID: covidwho-1268885
10.
Microorganisms ; 9(5)2021 May 10.
Article in English | MEDLINE | ID: covidwho-1224073

ABSTRACT

In addition to human cases, cases of COVID-19 in captive animals and pets are increasingly reported. This raises the concern for two-way COVID-19 transmission between humans and animals. Here, we developed a SARS-CoV-2 nucleocapsid protein-based competitive enzyme-linked immunosorbent assay (cELISA) for serodiagnosis of COVID-19 which can theoretically be used in virtually all kinds of animals. We used 187 serum samples from patients with/without COVID-19, laboratory animals immunized with inactive SARS-CoV-2 virions, COVID-19-negative animals, and animals seropositive to other betacoronaviruses. A cut-off percent inhibition value of 22.345% was determined and the analytical sensitivity and specificity were found to be 1:64-1:256 and 93.9%, respectively. Evaluation on its diagnostic performance using 155 serum samples from COVID-19-negative animals and COVID-19 human patients showed a diagnostic sensitivity and specificity of 80.8% and 100%, respectively. The cELISA can be incorporated into routine blood testing of farmed/captive animals for COVID-19 surveillance.

11.
Critical Care Medicine ; 49(1 SUPPL 1):150, 2021.
Article in English | EMBASE | ID: covidwho-1194011

ABSTRACT

INTRODUCTION: Caring for critically ill children with known or suspected severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections requires significant changes to usual pediatric intensive care unit operations related to infection control policies and frequent evolution of clinical care practice. We hypothesized that patients with known or suspected SARS-CoV-2 would more often experience delays in timely antibiotic administration. METHODS: We performed a retrospective cohort study including all children with suspected sepsis admitted to our tertiary PICU from March 16 through June 18, 2020. Suspected sepsis was defined by an order for a broadspectrum antibiotic and blood culture. Children with known or suspected SARS-CoV-2 were defined by admission to the Pediatric Special Treatment Unit (PSTU), an isolation unit within the PICU dedicated to care of SARS-CoV-2 patients. The primary outcome of median time to antibiotic administration was compared using the Mann-Whitney-U test. Secondary outcomes included the proportion of antibiotics administered within 1 hour of the order and sepsis pathway utilization. Fisher's exact test was used for comparison of secondary outcomes. RESULTS: A total of 155 sepsis episodes were evaluated, including 14 with known/suspected SARS-CoV-2 and 141 with non-SARS-CoV-2 sepsis. Median time to antibiotic administration was 70.5 minutes in known/suspected SARSCoV- 2 versus 103 minutes in non-SARS-CoV-2 sepsis (NS). Secondary outcomes were also not different between groups. Known/suspected SARS-CoV-2 patients received 36% of new antibiotics within 60 minutes as compared to 46% of non-SARS-CoV-2 patients. Pathway utilization was 29% in known/suspected SARS-CoV-2 and 23% in non-SARSCoV- 2 patients. CONCLUSIONS: Despite significant operational changes enacted to care for SARS-CoV-2 patients, time to antibiotic administration and utilization of the sepsis pathway were no different than in non-SARS-CoV-2 patients with suspected sepsis. Operational challenges may have been overcome by a staffing model that emphasized attending physicians as well as a higher nurse to patient ratio for this population.

12.
Global Sustainability ; 2020.
Article in English | Scopus | ID: covidwho-1132007

ABSTRACT

Non-technical summary We summarize some of the past year's most important findings within climate change-related research. New research has improved our understanding of Earth's sensitivity to carbon dioxide, finds that permafrost thaw could release more carbon emissions than expected and that the uptake of carbon in tropical ecosystems is weakening. Adverse impacts on human society include increasing water shortages and impacts on mental health. Options for solutions emerge from rethinking economic models, rights-based litigation, strengthened governance systems and a new social contract. The disruption caused by COVID-19 could be seized as an opportunity for positive change, directing economic stimulus towards sustainable investments. Technical summary A synthesis is made of ten fields within climate science where there have been significant advances since mid-2019, through an expert elicitation process with broad disciplinary scope. Findings include: (1) a better understanding of equilibrium climate sensitivity;(2) abrupt thaw as an accelerator of carbon release from permafrost;(3) changes to global and regional land carbon sinks;(4) impacts of climate change on water crises, including equity perspectives;(5) adverse effects on mental health from climate change;(6) immediate effects on climate of the COVID-19 pandemic and requirements for recovery packages to deliver on the Paris Agreement;(7) suggested long-term changes to governance and a social contract to address climate change, learning from the current pandemic, (8) updated positive cost-benefit ratio and new perspectives on the potential for green growth in the short- A nd long-term perspective;(9) urban electrification as a strategy to move towards low-carbon energy systems and (10) rights-based litigation as an increasingly important method to address climate change, with recent clarifications on the legal standing and representation of future generations. Social media summary Stronger permafrost thaw, COVID-19 effects and growing mental health impacts among highlights of latest climate science. Copyright © The Author(s), 2021. Published by Cambridge University Press.

13.
mSphere ; 6(1)2021 02 10.
Article in English | MEDLINE | ID: covidwho-1079035

ABSTRACT

Compared to other human coronaviruses, the genetic diversity and evolution of human coronavirus 229E (HCoV-229E) are relatively understudied. We report a fatal case of COVID-19 pneumonia coinfected with HCoV-229E in Hong Kong. Genome sequencing of SARS-CoV-2 and HCoV-229E from a nasopharyngeal sample of the patient showed that the SARS-CoV-2 strain HK13 was most closely related to SARS-CoV-2 type strain Wuhan-Hu-1 (99.99% nucleotide identity), compatible with his recent history of travel to Wuhan. The HCoV-229E strain HK20-42 was most closely related to HCoV-229E strain SC0865 from the United States (99.86% nucleotide identity). To investigate if it may represent a newly emerged HCoV-229E genotype in Hong Kong, we retrieved 41 archived respiratory samples that tested positive for HCoV-229E from 2004 to 2019. Pneumonia and exacerbations of chronic airway diseases were common among infected patients. Complete RdRp, S, and N gene sequencing of the 41 HCoV-229E strains revealed that our contemporary HCoV-229E strains have undergone significant genetic drift with clustering of strains in chronological order. Two novel genogroups were identified, in addition to previously described genogroups 1 to 4, with recent circulating strains including strain HK20-42 belonging to novel genogroup 6. Positive selection was detected in the spike protein and receptor-binding domain, which may be important for viral evolution at the receptor-binding interphase. Molecular dating analysis showed that HCoV-229E shared the most recent common ancestor with bat and camel/alpaca 229E-related viruses at ∼1884, while camel/alpaca viruses had a relatively recent common ancestor at ∼1999. Further studies are required to ascertain the evolutionary origin and path of HCoV-229E.IMPORTANCE Since its first appearance in the 1960s, the genetic diversity and evolution of human coronavirus 229E (HCoV-229E) have been relatively understudied. In this study, we report a fatal case of COVID-19 coinfected with HCoV-229E in Hong Kong. Genome sequencing revealed that our SARS-CoV-2 strain is highly identical to the SARS-CoV-2 strain from Wuhan, compatible with the patient's recent travel history, whereas our HCoV-229E strain in this study is highly identical to a recent strain in the United States. We also retrieved 41 archived HCoV-229E strains from 2004 to 2019 in Hong Kong for sequence analysis. Pneumonia and exacerbations of chronic airway diseases were common diagnoses among the 41 patients. The results showed that HCoV-229E was evolving in chronological order. Two novel genogroups were identified in addition to the four preexisting HCoV-229E genogroups, with recent circulating strains belonging to novel genogroup 6. Molecular clock analysis dated bat-to-human and bat-to-camelid transmission to as early as 1884.


Subject(s)
COVID-19/pathology , Common Cold/pathology , Coronavirus 229E, Human/genetics , Genetic Variation/genetics , SARS-CoV-2/genetics , Adolescent , Adult , Aged , Aged, 80 and over , Base Sequence , COVID-19/mortality , Child , Child, Preschool , Coinfection/virology , Evolution, Molecular , Female , Genome, Viral/genetics , Hong Kong , Humans , Infant , Male , Middle Aged , Protein Domains/genetics , Sequence Analysis, RNA , Spike Glycoprotein, Coronavirus/genetics , Young Adult
14.
Nat Commun ; 12(1): 216, 2021 01 11.
Article in English | MEDLINE | ID: covidwho-1017751

ABSTRACT

While a number of human coronaviruses are believed to be originated from ancestral viruses in bats, it remains unclear if bat coronaviruses are ready to cause direct bat-to-human transmission. Here, we report the isolation of a MERS-related coronavirus, Tylonycteris-bat-CoV-HKU4, from lesser bamboo bats. Tylonycteris-bat-CoV-HKU4 replicates efficiently in human colorectal adenocarcinoma and hepatocarcinoma cells with cytopathic effects, and can utilize human-dipeptidyl-peptidase-4 and dromedary camel-dipeptidyl-peptidase-4 as the receptors for cell entry. Flow cytometry, co-immunoprecipitation and surface plasmon resonance assays show that Tylonycteris-bat-CoV-HKU4-receptor-binding-domain can bind human-dipeptidyl-peptidase-4, dromedary camel-dipeptidyl-peptidase-4, and Tylonycteris pachypus-dipeptidyl-peptidase-4. Tylonycteris-bat-CoV-HKU4 can infect human-dipeptidyl-peptidase-4-transgenic mice by intranasal inoculation with self-limiting disease. Positive virus and inflammatory changes were detected in lungs and brains of infected mice, associated with suppression of antiviral cytokines and activation of proinflammatory cytokines and chemokines. The results suggest that MERS-related bat coronaviruses may overcome species barrier by utilizing dipeptidyl-peptidase-4 and potentially emerge in humans by direct bat-to-human transmission.


Subject(s)
Chiroptera/virology , Coronavirus Infections/virology , Dipeptidyl Peptidase 4/metabolism , Middle East Respiratory Syndrome Coronavirus/isolation & purification , Animals , Brain/pathology , Caco-2 Cells , Coronavirus Infections/immunology , Coronavirus Infections/pathology , Coronavirus Infections/transmission , Cytokines/metabolism , Dipeptidyl Peptidase 4/genetics , HEK293 Cells , Host Specificity , Humans , Lung/pathology , Mice , Mice, Inbred C57BL , Mice, Transgenic , Middle East Respiratory Syndrome Coronavirus/genetics
15.
Emerg Infect Dis ; 26(12): 2961-2965, 2020 12.
Article in English | MEDLINE | ID: covidwho-690716

ABSTRACT

Severe acute respiratory syndrome coronavirus 2 did not replicate efficiently in 13 bat cell lines, whereas severe acute respiratory syndrome coronavirus replicated efficiently in kidney cells of its ancestral host, the Rhinolophus sinicus bat, suggesting different evolutionary origins. Structural modeling showed that RBD/RsACE2 binding may contribute to the differential cellular tropism.


Subject(s)
SARS-CoV-2/physiology , Severe acute respiratory syndrome-related coronavirus/physiology , Viral Tropism/genetics , Animals , COVID-19 , Chiroptera/virology , Humans , Middle East Respiratory Syndrome Coronavirus/genetics , Middle East Respiratory Syndrome Coronavirus/physiology , Pandemics , Severe acute respiratory syndrome-related coronavirus/genetics , SARS-CoV-2/genetics , Virus Replication
16.
Emerg Infect Dis ; 26(7): 1542-1547, 2020 Jul.
Article in English | MEDLINE | ID: covidwho-99822

ABSTRACT

We showed that severe acute respiratory syndrome coronavirus 2 is probably a novel recombinant virus. Its genome is closest to that of severe acute respiratory syndrome-related coronaviruses from horseshoe bats, and its receptor-binding domain is closest to that of pangolin viruses. Its origin and direct ancestral viruses have not been identified.


Subject(s)
Betacoronavirus/isolation & purification , Chiroptera/virology , Animals , Betacoronavirus/classification , Betacoronavirus/genetics , Phylogeny , Recombination, Genetic , SARS-CoV-2
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