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1.
Chinese Journal of Parasitology and Parasitic Diseases ; 39(2):245-248, 2021.
Article in Chinese | EMBASE | ID: covidwho-20238636

ABSTRACT

During the COVID-19 epidemic, blood samples are usually processed at 56 to attenuate the virus before pathogen detection. 71 blood samples of malaria patients reported by Shanghai Center for Disease Control and Prevention in 2017-2019 were collected, including 38 with Plasmodium falciparum infection, 8 P. malariae, 11 P. ovale and 14 P. vivax. The effect of inactivation on the thermal stability of P. falciparum histidine rich protein II (PfHRPII) and Plasmodium lactate dehydrogenase (pLDH) in blood samples was assessed before and after incubation at 56 for 30 min using the rapid diagnostic test (RDT) kit. The results showed that among the 38 P. falciparum T1-positive (PfHRPII) blood samples before heat treatment, 35 samples remained to be T1-positive (92.11%, 35/38, chi2=3.123, P>0.05) after heat treatment;while 54 blood samples (26 P. falciparum, 6 P. vivax, 10 P. ovale and 12 P. vivax) that were T2-positive (pLDH) before heat treatment turned to be T2-negative (positive rate 0, 0/54, chi2=87.755, P<0.01) after heat treatment. It was demonstrated that PfHRPII is stable during incubation at 56 for 30 min, while pLDH is unstable and degraded or inactivated during the heating. Therefore, the detection results of P. falciparum will not be affected by RDT, but diagnosis of the parasites other than P. falciparum in blood samples may be missed.Copyright © 2021, National Institute of Parasitic Diseases. All rights reserved.

2.
Chemical Engineering Journal ; 469:143844, 2023.
Article in English | ScienceDirect | ID: covidwho-20230915

ABSTRACT

Biosensors are rapid and portable detection devices with great potential for the instant screening of infectious diseases. Receptors are the critical element of biosensors. They determine the specificity, sensitivity and stability. However, current receptors are mainly limited to antibodies and aptamers. Herein, we developed a glycosylated extracellular vesicle-like receptor (GlycoEVLR) for the rapid detection of virus antigens, specifically using SARS-CoV-2 as a model. The human angiotensin-converting enzyme 2 (ACE2)-overexpressed and heparin-functionalized HEK-293T cell membrane-cloaked Fe3O4 nanoparticles (NPs) were prepared as functionalizing GlycoEVLR. They were characterized as spherical core–shell structures with a diameter of around 100 nm, which were perfectly comparable to natural extracellular vesicles. Binding affinities between GlycoEVLR and spike1 (S1) antigen were demonstrated using surface plasmon resonance (SPR). The GlycoEVLR was fixed on magnetic electrodes to construct electrochemical biosensors. Using electrochemical impedance spectroscopy (EIS) as a measurement technique, the S1 antigen was detected down to 1 pg/mL within 20 min and showed a good linearity range from 1 pg/mL to 1 ng/mL. Also, the GlycoEVLR-based electrochemical biosensors showed excellent antifouling performance and stability. Overall, our work provides a useful methodology for developing extracellular vesicle-like receptors for biosensors. Combining the inherit natural receptor proteins and antifouling lipids from the host cells with engineered glycan motifs to target and sense viral antigens will open a newavenue for biosensors.

3.
Chinese Journal of Parasitology and Parasitic Diseases ; 39(4):461-465, 2021.
Article in Chinese | EMBASE | ID: covidwho-2327254

ABSTRACT

Objective To assess the case-based malaria surveillance and response during the period of COVID-19 outbreak in China, in order to provide reference for malaria elimination under the COVID-19 pandemic. Methods Information of malaria cases reported during the four months pre - and post-COVID -19 outbreak (December 1, 2019-March 31, 2020) and in the same time period of past two years in China (excluding Hong Kong, Macau and Taiwan regions) was obtained from the Parasitic Disease Control Information Management System. Cross-sectional survey and comparison were conducted for malaria surveillance and response data in 3 four-month time periods (December 1, 2019 to January 22, 2020;January 23 to March 17, 2020;and March 18-31, 2020). The number of malaria cases including deaths, the median and average time interval from disease onset to the first visit, the median and average of time interval from the first visit to the confirmed diagnosis, the completion status of the #1-3-7$ task and the source of infections in each period were analyzed and compared to the same times in the past two years. Results From December 1, 2019 to March 31, 2020, a total of 750 malaria cases, which were all imported cases, were reported in China, decreased by 9.2% from that reported during December 2018 and March 2019 (826 cases) and by 13.1% from that reported during December 2017 to March 2018 (863 cases). The decrease mainly occurred in February and March in 2020;there were no statistical differences in the time interval from onset to first visit (median 1 day, mean 2.0 days), time interval from first visit to confirmed diagnosis (median 1 day, mean 1.8 days), case reporting rate within 1 day (100%), case epidemiological investigation rate within 3 days (98.4%), epidemic site disposal rate within 7 days (100%) between the time period of COVID-19 outbreak and the same time in the past year (December 2018 to March 2019). In addition, no statistical difference (! > 0.05) was found in the time intervals from onset to first visit among the first period [median 1 d, average (1.9 +/- 0.2) d], the second period [median 1 d, average (2.1 +/- 0.3) d] and the third period [median 1 d, mean (1.5 +/- 0.3) d], while the time interval from the first visit to the confirmed diagnosis was statistically different (! X 0.05) among the first period [median 0 d, average (1.5 +/- 0.2) d], the second period [median 1 d, mean (2.3 +/- 0.3) d] and the third period [median 0.5 d, average (1.5 +/- 0.4) d], where the time interval in the second period was longer than that in the first period (! X 0.01). Conclusion China' s core measures to eliminate malaria have been carried out as planned, although the timely malaria diagnosis was slightly affected in the second time period (January 23 to March 17, 2020).Copyright © 2021, National Institute of Parasitic Diseases. All rights reserved.

4.
International Journal of Operations and Production Management ; 2023.
Article in English | Scopus | ID: covidwho-2320321

ABSTRACT

Purpose: This study examines the firm-level financial consequences caused by supply chain disruptions during COVID-19 and explores how firms' supply chain diversification strategies, including diversified suppliers, customers and products, moderate the negative effect on firm performance. Design/methodology/approach: Based on data drawn from 222 publicly traded firms in China, the authors use event study methodology to estimate the effects of supply chain disruptions on the financial performance of affected firms. Regression analyses are conducted to examine the moderating effects of supply chain diversification. Findings: Firms affected by supply chain disruptions during COVID-19 experienced a significant decline in shareholder value in two weeks and a subsequent decrease in operating performance in one year. Diversified suppliers, customers and products act as shock absorbers to alleviate the negative effects. Further regression shows a substitution effect between customer and product diversification. Cross-industry comparisons reveal that service firms experienced more loss than manufacturing firms. Customer diversification mitigates the adverse effects of supply chain disruptions for both manufacturing and service firms. Supplier diversification exerts a noteworthy role in manufacturing firms, while product diversification is beneficial for service firms. Originality/value: The study provides empirical evidence on the magnitude of financial consequences of supply chain disruptions during COVID-19 in both the short term and long term and enriches the current understanding of how to build resilience from the supply chain diversification perspective. © 2023, Emerald Publishing Limited.

5.
30th Annual International eTourism Conference, ENTER 2023 ; : 40-52, 2023.
Article in English | Scopus | ID: covidwho-2288928

ABSTRACT

The extant studies have attested to the effects of media experiences in shaping destination image and influencing the behavioral intentions of potential tourists. However, limited works have focused on the impact of holistic experiences during the interaction with destination-related short-form videos on potential tourists' negative emotional responses and post-COVID travel intention. This study aims to elucidate how cognitive absorption affects tourists' travel anxiety and post-pandemic travel intention in different travel settings (domestic versus international). The comparative results show that users' cognitive absorption when interacting with destination-related short-form videos can effectively influence the behavioral intentions of potential tourists. The result also identified that travel anxiety significantly contributes to higher post-COVID travel intention. This study expands cognitive absorption research in the contexts of tourism and short-form videos, offers an angle for future studies to positively interpret tourists' travel anxiety, and provides tourism practitioners with suggestions on the tourism industry's recovery in the post-COVID era. © 2023, The Author(s).

6.
Diagnostic Imaging of Novel Coronavirus Pneumonia ; : 39-143, 2020.
Article in English | Scopus | ID: covidwho-2288587

ABSTRACT

Medical History and Clinical Manifestation © Henan Science and Technology Press 2020.

7.
Medicine in Microecology ; 4 (no pagination), 2020.
Article in English | EMBASE | ID: covidwho-2288411

ABSTRACT

Objective: The pandemic 2019 Coronavirus disease (COVID-19) is the greatest concern globally. Here we analyzed the epidemiological features of China, South Korea, Italy and Spain to find out the relationship of major public health events and epidemiological curves. Study design: In this study we described and analyzed the epidemiological characteristics of COVID-19 in and outside China. We used GAM to generate the epidemiological curves and simulated infection curves with reported incubation period. Result(s): The epidemiological curves derived from the GAM suggested that the infection curve can reflect the public health measurements sensitively. Under the massive actions token in China, the infection curve flattened at 23rd of January. While surprisingly, even before Wuhan lockdown and first level response of public emergency in Guangdong and Shanghai, those infection curve came to the reflection point both at 21st of January, which indicated the mask wearing by the public before 21st Jan were the key measure to cut off the transmission. In the countries outside China, infection curves also changed in response to measures, but its rate of decline was much smaller than the curve of China's. Conclusion(s): The present analysis comparing the epidemiological curves in China, South Korea, Italy and Spain supports the importance of mask wearing by the public. Analysis of the infection curve helped to clarify the impact of important public health events, evaluate the efficiencies of prevention measures, and showed wearing masks in public resulted in significantly reduced daily infected cases.Copyright © 2020 The Author(s)

8.
Energy Research and Social Science ; 97, 2023.
Article in English | Scopus | ID: covidwho-2281065

ABSTRACT

Low-income households generally experience a high energy burden;however, the factors influencing energy burdens are beyond socio-economics. This study explores the relationships between the multidimensionality of community vulnerability factors and energy burden across multiple geospatial levels in the United States. Our study found the distribution of energy burden in 2020 showed a great deal of variety, ranging from a minimum of 2.93 % to a maximum of 30.45 % across 3142 counties. The results of non-spatial and spatial regressions showed that the vulnerability ranks of socioeconomic, household composition and disability, minority and language, household type and transportation, and COVID mortality rate are significant predictors of energy burdens at the national level. However, at the regional level, only socioeconomic, minority and language significantly influence energy burdens. Minority and language negatively impact energy burdens except for the South East-Central region. Additionally, our analyses highlight the need to consider community vulnerability indicators' spatial homogeneity and heterogeneity. At the national level, only the epidemiological factors index is a spatially homogeneous predictor;on the regional and state level, the spatially homogeneous predictors such as socioeconomic status, household composition and disability, and household type and transportation vary by region. Such a region-sensitive relationship between energy burden and the predictors indicates spatial heterogeneity. This study suggests policy recommendations through the lens of the multidimensionality of community vulnerability factors. Implementing flexible national energy policies while making particular energy assistance policies for the vulnerable population at the regional or state levels is essential. © 2023

9.
Sustainability (Switzerland) ; 15(5), 2023.
Article in English | Scopus | ID: covidwho-2264777

ABSTRACT

This paper proposes the dynamic inoperability input–output model (DIIM) to analyze the economic impact of COVID-19 in Shanghai in the first quarter of 2022. Based on the input–output model, the DIIM model introduces the sector elasticity coefficient, assesses the economic loss of the system and the influence of disturbances on other sectors through sectoral dependence, and simulates the inoperability and economic loss changes through time series. A multi-evaluation examination of the results reveals that the degree of inoperability of sub-sectors is inconsistent with the ranking of economic losses and that it is hard to quantify the impact of each sector directly. Different from the traditional DIIM model that only considers the negative part of the disaster, the innovation of this paper is that the negative value of the inoperability degree is used to measure the indirect positive growth of sectors under the impact of the Shanghai pandemic shock. At the same time, policymakers need to consider multi-objective optimization when making risk management decisions. This study uses surrogate worth trade-off to construct a multi-objective risk management framework to expand the DIIM model to enable policymakers to quantify the trade-off between economic benefit and investment costs when making risk management decisions. © 2023 by the authors.

10.
Current Issues in Tourism ; 26(1):18-30, 2023.
Article in English | Scopus | ID: covidwho-2242803

ABSTRACT

Travel livestreaming has brought light to the tourism industry during the darkness of the COVID-19 pandemic. Although travel livestreaming is in full swing in practice, academic research on this subject is somewhat lagging. Value dimensions/drivers derived from service field may contribute to the overall value of relevant stakeholders. The aim of this preliminary study is to identify emotional experiences from the perspective of travel livestream viewers, revealing the drivers of value cocreation and codestruction. Based on grounded theory, data were collected through in-depth semistructured interviews, and 11 functional dimensions were revealed, namely, authenticity and immersion, entertainment, remuneration, uniqueness, symmetry, utility and convenience, interactivity, technical support, livestreamer characteristics, and regulators. These dimensions are contributed by multiple entities, including travel suppliers, livestreamers, live platforms, other viewers, individuals, and the external environment. These findings provide evidence of the reversibility of cocreation and codestruction and makes contributions to both theory and practice, especially regarding implications for future research. © 2021 Informa UK Limited, trading as Taylor & Francis Group.

11.
J Hosp Infect ; 131: 1-11, 2022 Oct 03.
Article in English | MEDLINE | ID: covidwho-2243844

ABSTRACT

BACKGROUND: The arrival of the Delta variant of SARS-CoV-2 was associated with increased transmissibility and illness of greater severity. Reports of nosocomial outbreaks of Delta variant COVID-19 in acute care hospitals have been described but control measures varied widely. AIM: Epidemiological investigation of a linked two-ward COVID-19 Delta variant outbreak was conducted to elucidate its source, risk factors, and control measures. METHODS: Investigations included epidemiologic analysis, detailed case review serial SARS-CoV-2 reverse transcriptase-polymerase chain reaction (RT-PCR) testing of patients and healthcare workers (HCWs), viral culture, environmental swabbing, HCW-unaware personal protective equipment (PPE) audits, ventilation assessments, and the use of whole genome sequencing (WGS). FINDINGS: This linked two-ward outbreak resulted in 17 patient and 12 HCW cases, despite an 83% vaccination rate. In this setting, suboptimal adherence and compliance to PPE protocols, suboptimal hand hygiene, multi-bedded rooms, and a contaminated vital signs cart with potential fomite or spread via the hands of HCWs were identified as significant risk factors for nosocomial COVID-19 infection. Sudden onset of symptoms, within 72 h, was observed in 79% of all Ward 2 patients, and 93% of all cases (patients and HCWs) on Ward 2 occurred within one incubation period, consistent with a point-source outbreak. RT-PCR assays showed low cycle threshold (CT) values, indicating high viral load from environmental swabs including the vital signs cart. WGS results with ≤3 SNP differences between specimens were observed. CONCLUSION: Outbreaks on both wards settled rapidly, within 3 weeks, using a `back-to-basics' approach without extraordinary measures or changes to standard PPE requirements. Strict adherence to recommended PPE, hand hygiene, education, co-operation from HCWs, including testing and interviews, and additional measures such as limiting movement of patients and staff temporarily were all deemed to have contributed to prompt resolution of the outbreak.

12.
22nd International Conference on Electronic Business, ICEB 2022 ; 22:526-534, 2022.
Article in English | Scopus | ID: covidwho-2207638

ABSTRACT

Consumer purchasing patterns has been affected by COVID-19 health Crisis. Thus, companies must adapt to this change by focusing on understanding the different variables affecting the post pandemic purchase intentions of consumers. Therefore, the basic objective of this study is the development of an integrated framework to investigate the impact of the colors used for products on online advertisement and the consumer personality on the purchase intention of customers in the context of post pandemic. This study will also focus on highlighting the moderating role of age and gender on the relationship between the three constructs. Data were collected from customers of 53 Moroccan textile companies operating in the E-commerce industry. The data was analyzed, and the theoretical model was validated using Partial least square (PLS) and structural equation model (SEM). The findings show that: the color of the product displayed in the advertisement has a high impact on the purchase intention of consumers;the personality of the consumer impact positively the purchase intention of the consumer, and finally, color of the product displayed on the advertisement has a bigger impact on the purchase intention of young people than old people while age doesn't have any significant impact on the relationship between personality and purchase intention. The contribution of this study is to emphasize the roles of understanding the use of colors in advertising and the personality of the consumer, during the post pandemic, on consumer purchasing intention, for companies to innovate and differentiate their offered advertisements to meet the needs and survive the crisis. © 2022 International Consortium for Electronic Business. All rights reserved.

13.
China Tropical Medicine ; 22(8):769-775, 2022.
Article in Chinese | Scopus | ID: covidwho-2203858

ABSTRACT

Objective To explore the potential regulatory mechanism of Xuebijing injection in the treatment of COVID-19 by using network pharmacology and molecular docking methods. Methods Corresponding target genes of all the active ingredients of Xuebijing injection were obtained by using the pharmacological database and analysis platform of TCM System (TCMSP). And intersections with the COVID-19 gene-related targets in GeneCards database, OMIM database, PharmGkb database, TTD database and DrugBank database using the R programming language. Thus, the core target of Xubijing injection in COVID-19 treatment was obtained;Cytoscape 3.7.2 software was used to construct TCM - compound - target network;PPI network of intersection target was obtained by STRING;Utilized data packets to perform gene ontology (GO) functional enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis to predict the mechanism of overlapping targets. Finally, molecular docking technology was implemented to dock key active ingredients with PPI core protein. Results GO functional enrichment analysis included 1 818 biological processes (BP), 20 cellular components (CC) and 89 molecular functions (MF). The first 30 KEGG related pathways involved inflammation and immune response, such as rheumatoid arthritis signaling pathway, IL-17 signaling pathway, Th17 cell differentiation pathway, hypoxia-inducible factor (HIF-1) signaling pathway, JAK-Stat signaling pathway, inflammatory bowel disease signaling pathway, NF-κB signaling pathway, etc. Quercetin, cryptotanshinone, luteolin, β -carotene can affect IL1B, STAT3, AKT1, VEGFA and other overlapping targets. Meanwhile, quercetin may exert anti-inflammatory, antiviral and immune responses through IL1B binding to treat COVID-19. Conclusion This study reveals that chemical components in Xuebijing injection are involved in multiple biological processes and pathways in COVID-19 treatment through binding to key target proteins. © 2022. China Tropical Medicine. All rights reserved.

14.
Research of Environmental Sciences ; 35(12):2647-2656, 2022.
Article in Chinese | Scopus | ID: covidwho-2203840

ABSTRACT

Since the outbreak of the coronavirus disease 2019 (COVID-19), severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has been found in wastewater frequently worldwide. Based on the wastewater-based epidemiology (WBE), wastewater surveillance of SARS-CoV-2 can complement population surveillance for COVID-19. Quantification of viral load and genome sequencing of SARS-CoV-2 can help early warning of COVID-19 outbreaks, early identification of asymptomatic cases, assessment of infection scale, prediction of pandemic trend status, and identification of virus sources to provide scientific basis for polices for the prevention and control. Accordingly, here, the sources of SARS-CoV-2 in wastewater at home and abroad and the major factors affecting the survival of virus were reviewed. Common methods to concentrate, detect and quantify SARS-CoV-2 were reviewed, with an overview of global surveillance projects, progresses, and remaining scientific issues. Some shortcomings of the current procedures, including the lack of sufficient information on distribution characteristics and infectivity of SARS-CoV-2 in wastewater and limited development and application of prediction models were also discussed. WBE can provide insight into the scientific prevention and control of COVID-19 in the face of current or future pandemics in China, and enhance China′s ability to deal with the surveillance and early warning, epidemic scale assessment, and accurate policy-making for the infectious and non-infectious diseases. © 2022 Editorial Board, Research of Environmental Sciences. All rights reserved.

15.
Xitong Gongcheng Lilun yu Shijian/System Engineering Theory and Practice ; 42(11):2869-2880, 2022.
Article in Chinese | Scopus | ID: covidwho-2203680

ABSTRACT

Motivated by the trend of overseas/cross-regional firms returning to domestic/local and the background of COVID-19 normalization, a sourcing decision model is proposed based on the cost-signal game under the demand uncertainty and forecast inaccuracy. We explore the trade-off between the efficient cross-regional sourcing and responsive local sourcing. The results show that the sourcing decision depends on the linkage performances of cost and information. Cross-regional sourcing always brings mighty cost performance, while the local sourcing can not always give full play to information performance advantage. Because if both firms choose local sourcing, the correlation effect between forecast information will hedge signal accuracy effect. Greater demand uncertainty and more accurate cross-regional sourcing forecast are driving films to return. Interestingly, this return may benefit all the firms, and break the Prisoner's Dilemma of symmetric cross-regional sourcing. The reason is that the returning can alleviate competition by inducing a new equilibrium sourcing structure. In response, this mixed equilibrium endows firms with "follower advantage” to realize local-Pareto improvement. With the increase of demand uncertainty and forecast inaccuracy, this mixed equilibrium will turn to the symmetric local sourcing, which temporarily reaches the overall Pareto-optimum. However, it will eventually fall into the Prisoner's Dilemma of lose-lose situation. In addition, it is also found that the poor local sourcing forecast will endow firms with "mover advantage”, which will lead to the mover becoming better while the follower becoming worse. © 2022 Systems Engineering Society of China. All rights reserved.

17.
2022 International Conference on Biomedical and Intelligent Systems, IC-BIS 2022 ; 12458, 2022.
Article in English | Scopus | ID: covidwho-2193339

ABSTRACT

Wearing masks has been generally recommended to reduce the spreading of COVID-19. However, little is known about its effects on metabolic VOC changes in human body. To explore how the duration of wearing masks influences VOC metabolism in the human body, the essay used a self-developed electronic nose to analyse exhaled breath samples from 10 healthy individuals in this study. Firstly, polytetrafluoroethylene sampling bags are used to collect breath samples after volunteers wearing masks for 1h, 2h, 3h, 4h, and 5h. Secondly, data pre-processing, including baseline calibration and normalization are carried out. Thirdly, the study used LDA for dimensionality reduction on the original data to extract 4 features. Fourthly, differences in the length of time of wearing masks are analysed. Then, 4 algorithms were applied for cluster analysis based on extracted features. Moreover, 3 supervised classification algorithms were used to recognize the duration of wearing masks. Finally, multi-dimensional linear regression is used to study the possibility of predicting the duration of wearing masks based on breath signals acquired through electronic noses. As a result, the first feature extracted by LDA significantly differs from each other in the duration of wearing masks (p<0.05). Cluster analysis results show that the optimal internal parameters Adjusted Rand Index, Adjusted Mutual Information, Homogeneity and V-measure reach 80.2%, 81.5%, 83.5% and 83.7% respectively. Using 5-fold cross-validation on the K nearest neighbour classification model, the best accuracy of recognizing durations of wearing a mask reaches 88%. R-square of multi-dimensional linear regression reaches 92.5%, which shows excellent fitting performance. It can be concluded that the VOC metabolism of the human may change with the duration of wearing masks. Further, "breath prints” obtained by electronic nose may have the potential to predict the effective time and even the quality of masks. © 2022 SPIE.

18.
Open Forum Infectious Diseases ; 9(Supplement 2):S924, 2022.
Article in English | EMBASE | ID: covidwho-2190038

ABSTRACT

Background. Vaccination strategies that provide enhanced immunity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants are needed. We evaluated the safety and immunogenicity of a bivalent omicron containing vaccine, mRNA-1273.214 (50 mug), administered as a second booster dose in adult participants. Methods. In this ongoing phase 2/3 trial, 50 mug of the bivalent vaccine mRNA-1273.214 (25 mug each ancestral Wuhan-Hu-1 and omicron BA.1 spike mRNAs) or 50 mug of the authorized mRNA-1273 were administered as second boosters in adults who previously received a 2 dose (100 mug) primary series and a first booster (50 mug) dose of mRNA-1273 (>= 3 months prior). Primary objectives were safety and reactogenicity and immunogenicity 28 days post-booster dose. Results. In participants with no prior SARS-CoV-2 infection who received booster doses of mRNA-1273.214 (n=334) or mRNA-1273 (n=260), neutralizing antibody (nAb) geometric mean titers (GMTs [95% confidence interval (CI)]) against omicron BA.1 were 2372.4 (2070.6-2718.2) and 1473.5 (1270.8-1708.4), respectively. The model-based GMT ratio (GMR [97.5% CI]) of mRNA-1273.214 compared to mRNA-1273 was 1.75 (1.49-2.04), meeting the pre-specified superiority criterion against omicron BA.1. The pre-specified criterion for non-inferiority against the ancestral SARS-CoV-2 strain was also met. Additionally, mRNA-1273.214 elicited higher GMTs (727.4 [632.8-836.1]) than mRNA-1273 (492.1 [431.1-561.9]) against omicron subvariants BA.4/BA.5 [GMR (95% CI) 1.69 [1.51-1.90])]. Binding antibody responses against alpha, beta, gamma, delta, and omicron were numerically higher in the mRNA-1273.214 group compared to mRNA-1273. mRNA-1273.214 GMTs were consistently higher across age (18-< 65 and >= 65 years) and pre-booster SARS-CoV-2 infection subgroups (Figure). Safety and reactogenicity were similar for both vaccine groups. Conclusion. The bivalent omicron containing mRNA-1273.214 elicited superior nAb responses against omicron 28 days post-immunization compared to mRNA-1273 regardless of age and prior SARS-CoV-2 infection;no new safety concerns were identified. (Figure Presented).

19.
Resources Policy ; 80, 2023.
Article in English | Scopus | ID: covidwho-2182739

ABSTRACT

This research takes seven representative crude oil markets in the world, decomposes and reconstructs the yield series by CEEMDAN and Fine-to-coarse algorithm, and measures the markets' risk level by applying the DCC-GARCH-CoVaR model. We further construct a network spillover model based on TVP-VAR to investigate the return spillover and risk spillover effects among these oil markets in different time scales. The empirical results are as follows. (1) Integration within the international crude oil market is deepening, and return spillover and risk spillover are at high levels. (2) In the short run, Brent, Tapis, and Bonny crude oil markets are the main net exporters of return spillovers, while in the long run, Brent, WTI, and Dubai crude oil markets are global crude oil price benchmarks. (3) The risk level of each crude oil market under the full sample and high-frequency perspective is generally consistent, and the dynamic spillover effects between markets are relatively close, while the Brent and Tapis crude oil markets are the main net exporters of risk spillovers from the low-frequency perspective. (4) The impact of the same event on the spillover effect is heterogeneous in different time scales. For example, the spread of the COVID-19 epidemic in 2020 and the break-up of the "OPEC +” crude oil negotiations reduced the risk spillover level in the short term, but increased the risk spillover level in the long term. © 2022 Elsevier Ltd

20.
24th International Conference on Human-Computer Interaction, HCII 2022 ; 1654 CCIS:436-443, 2022.
Article in English | Scopus | ID: covidwho-2173713

ABSTRACT

The COVID-19 Pandemic brought the whole society to a standstill, which has more significant psychological pressure on children and adolescents. Governments, companies, and social groups are trying to confront COVID-19 and social distancing in a gamified way. However, due to fear of the virus and uncertainty about the future, even after the Pandemic is well controlled in physical space, people are still reluctant to stop and play in public areas and are afraid to engage with others because of their internal sense of alienation. From the perspective of urban renewal and environmental design, creating a series of micro-scale design interventions in public spaces to relieve psychological pressure has urgency and relevant significance. This paper analyzes the symbiotic relationship between public art installations and communities. Then discovers the characteristics of public installations based on emotional healing. Furthermore, create two design prototypes to demonstrate more vividly how gamified interactive experience could relieve the mental pressure of the surrounding residents and help them gradually adapt to the new normal life. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

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