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1.
Adv Biol Regul ; 86: 100916, 2022 Dec.
Article in English | MEDLINE | ID: covidwho-2069258

ABSTRACT

During the first year of the pandemic, East Asian countries have reported fewer infections, hospitalizations, and deaths from COVID-19 disease than most countries in Europe and the Americas. Our goal in this paper is to generate and evaluate hypothesis that may explain this striking fact. We consider five possible explanations: (1) population age structure (younger people tend to have less severe COVID-19 disease upon infection than older people); (2) the early adoption of lockdown strategies to control disease spread; (3) genetic differences between East Asian population and European and American populations that confer protection against COVID-19 disease; (4) seasonal and climactic contributors to COVID-19 spread; and (5) immunological differences between East Asian countries and the rest of the world. The evidence suggests that the first four hypotheses are unlikely to be important in explaining East Asian COVID-19 exceptionalism. Lockdowns, in particular, fail as an explanation because East Asian countries experienced similarly good infection outcomes despite vast differences in lockdown policies adopted by different countries to control the COVID-19 epidemic. The evidence to date is consistent with our fifth hypothesis - pre-existing immunity unique to East Asia - but there are still essential parts of this story left for scientists to check.


Subject(s)
COVID-19 , Humans , Aged , COVID-19/epidemiology , COVID-19/prevention & control , Communicable Disease Control , Pandemics/prevention & control , Vaccination
2.
Maritime Business Review ; 7(4):286-287, 2022.
Article in English | ProQuest Central | ID: covidwho-2063214

ABSTRACT

In Tomoya Kawasaki, Takuma Matsuda, Yui-yip Lau and Xiaowen Fu (The durability of economic indicators in container shipping demand: a case study of East Asia–US container transport), the durability of economic indicators on container movements from East Asia to the USA are identified by a vector autoregression model using monthly-based time-series data. Takuma Matsuda, Enna Hirata and Tomoya Kawasaki aim to contribute to the empirical literature on the container shipping industry market structure (Monopoly in the container shipping market: an econometric approach). Phong Nha Nguyen and Hwayoung Kim aim to identify the characteristics of the maritime shipping network in Northeast Asia as well as compare the level of port connectivity among these container ports in the region (Analyzing the international connectivity of the major container ports in Northeast Asia).

3.
Environmental Science & Technology ; 44(8):82-90, 2021.
Article in Chinese, English | CAB Abstracts | ID: covidwho-2056700

ABSTRACT

In order to trace and monitor the atmospheric heavy metal pollution in Xichang City, an investigation activity was carried out with a sort of moss (Taxiphyllum taxirameum) (packed in moss bags) as a biological indicator for monitoring heavy metal pollution. The investigation was conducted from the period from April 2019 to April 2020, during which two grave emergency events occurred during spring monitoring period from January 15 to April 15, 2020, i.e., COVID-19 and "3.30"severe forest fire in Xichang, which inevitably affected the atmospheric quality. Based on the concentration analysis of 12 kinds of heavy metal, including Al, Cr, Fe, Cu, Ni, Pb, Mn, Hg, Zn, V, As and Ba contained in the moss and the local meteorological data, comparing those informative data before and after the time when the emergency events toke place, the paper made an analysis on the impacts of two enormous emergency events on the air pollution of heavy metal in Xichang. The results showed that total amount of enrichment of above-mentioned 12 heavy metals in spring (January 15 to April 15, 2020) is (12.85 +or- 1.57) mg/g, which was significantly higher than in the other three seasons (p < 0.01), but no significant discrepancies about the total enrichment amount in the other three seasons (p > 0.05). Primarily because of COVID-19 pandemic, the level of motor vehicles emissions cut down, and the decrease of the tourism in the related areas perhaps causing the decline of pollution of Pb. In addition, the decrease of unbalanced emission of pollutants led to a noted increase of atmospheric oxidation in urban area, thus boosting the formation of secondary particulate matter, and the particulate matter from surrounding industrial sources was transported into the urban area;as a result, remarkable increases of Hg concentration of moss within the moss bags were detected downwind the industrial area located in the urban fringe. Consequently, the investigation showed that the moss-bag method is an effective biological tool for monitoring air heavy metal pollution, which could reflect the impacts of major pollution events on air quality.

4.
Chinese Journal of School Health ; 43(7):1061-1065, 2022.
Article in Chinese | GIM | ID: covidwho-2056575

ABSTRACT

Objective: To investigate mental health and its associated factors in college students during COVID-19 confinement in campus, and to provide a scientific basis for mental health education.

5.
Chinese Journal of School Health ; 43(7):1055-1060, 2022.
Article in Chinese | GIM | ID: covidwho-2056574

ABSTRACT

Objective: To explore the prevalence and related factors of depressive symptoms in Chinese college students before and after the COVID-19 epidemic and to provide a reference for mental health education and management.

6.
Journal of Chongqing Medical University ; 45(7):1031-1033, 2020.
Article in Chinese | GIM | ID: covidwho-2056460

ABSTRACT

This study aimed to analyze the effect of sterilization and disinfection procedures at two different levels before entering the residence of medical rescue teams fighting against coronavirus disease 2019(COVID-19) in infection prevention and control. A total of 160 medical team members who came from our hospital to aid Wuhan were taken as study objects. During that period implementing two different procedures, their temperature, health condition, nucleic acid testing results and adverse reports were analyzed. The number of adverse reports was 0 during 10 days when high-intensity disinfection procedures were implemented. Before the simplified procedure put into use, there were 8 cases about psychological acceptance in the first seven days;the simplified procedure was carried out when there was no adverse reports 7 days later. During the isolation period, the body temperature was monitored twice a day, without any abnormality;two nucleic acid testing results were both negative. The simplified process is a more scientific and reasonable disinfection process. Confronted with the prevention and control of the COVID-19, we must maintain a scientific and rational attitude and adopt right and reasonable measures, which is more conducive to security.

7.
Journal of Chongqing Medical University ; 45(7):1019-1022, 2020.
Article in Chinese | GIM | ID: covidwho-2056459

ABSTRACT

This study aimed to investigate the chest imaging finding of patients with coronavirus disease 2019 (COVID-19) in rehabilitation period. The clinical and imaging data of 80 patients with COVID-19 diagnosed as common type by the First People's Hospital of Xiaogan City, Hubei Province from 21 January 2020 to 23 February 2020 were collected. The discharge standard of the convalescent stage contained body temperature returned to normal over 3 days, significant improvement of respiratory tract symptoms and obviously absorbed inflammation as well as two negative consecutive respiratory tract pathogenic nucleic acid tests showed by the pulmonary imaging. HRCT manifestations of patients were dynamically observed and were compared with those at the time of admission. Typical syndrome and lesion distribution and morphology at convalescence stage were observed. HRCT of COVID-19 patients in convalescent period showed that the absorption of "fly swatter breaking sign" and "water inclusion sign" was decreased, with earlier and more obvious absorption of water inclusion sign. Compared with HRCT at the time of admission, localized patchy ground glass foci in the dorsolateral or posterior basal segments of both lungs, multi segmented ground glass density foci and diffusely distributed ground glass foci in the convalescent stage were obvious, the remaining interlobular interstitial and interlobular septal thickening, subpleural are shadow and irregular fibrous cord shadow foci among some patients were found and no obvious mediastinal lymphadenopathy and pleural effusion were found. The decrease of absorption of "broken fly swatter sign" and "wrapped water pipe sign" is a typical manifestation of the improvement of the general COVID-19 in the rehabilitation period. In the rehabilitation period, the discharged patients often left ground glass like changes, thickening of interlobular septum and/or interlobular septum, subpleural are shadow and residual interstitial inflammation. Only by popularizing HRCT in the clinical follow-up can effectively observe the dynamic changes of residual lesions, reduce the residual lesions and lower the risk of developing interstitial fibrosis.

8.
Journal of Fungal Research ; 19(1):1-5, 2021.
Article in Chinese | CAB Abstracts | ID: covidwho-2056454

ABSTRACT

The paper reviews and summarizes the development and current situation of China's edible fungi industry. The impact of the coronavirus epidemic on the edible fungus industry is analyzed, and the new opportunities and challenges of the mushroom industry are discussed. The new path of the development of edible fungi industry in the post epidemic era is expounded, and the direction for the sustainable development of edible fungi industry in China is also pointed out.

10.
Science & Technology Review ; 39(15):135-141, 2021.
Article in Chinese | GIM | ID: covidwho-2055556

ABSTRACT

In early 2020, COVID-19 outbroke in many countries around the world. Governments of various countries have since adopted diversified prevention and control measures to control the epidemic. Among them, AI has been an important auxiliary means that plays a unique role in prevention and control of COVID-19. The practical scenarios of AI assisting the prevention and control of COVID-19 have been focused on research field, mainly including epidemic monitoring and early warning, medical diagnosis, virus and drug research and development. The application of AI technology has significant effects on controlling the spread of the epidemic, alleviating the pressure of diagnosis and treatment and improving the efficiency of research and development. At the same time, AI is still facing practical problems such as regulations and ethics, data security, and algorithmic bias. Based on this, suggestions such as perfecting laws and regulations, ensuring data security, and strengthening talent training are proposed.

11.
Journal of Modern Laboratory Medicine ; 36(5):105-109, 2021.
Article in Chinese | GIM | ID: covidwho-2055553

ABSTRACT

The article's objective was to assess the clinical diagnostic utility of plasma levels of CRP, PCT, and IL-6 in individuals with COVID-19 both alone and in combination. Results showed that according to the ROC curve, PCT and CRP were highly valuable in the diagnosis of COVID-19, and CRP was most valuable in the evaluation of patients with severe and critical COVID-19. The combined detection of the three indexes might increase the evaluation's effectiveness. When evaluating COVID-19 patients who were in severe condition, IL-6 demonstrated a strong predictive value. Therefore, combining the three indicators may increase the diagnostic efficiency and provide crucial reference values for the clinical diagnosis and treatment of COVID-19. CRP, PCT, and IL-6 levels may be potential biomarkers for the diagnosis of COVID-19 and can be used to determine the severity of COVID-19.

12.
Journal of Modern Laboratory Medicine ; 36(4):122-128, 2021.
Article in Chinese | GIM | ID: covidwho-2055552

ABSTRACT

The aim this meta-analaysis was to understand the current status of nucleic acid positivity rate of severe acute respiratory syndrome coronavirus (SARS-CoV-2) in close contacts of novel coronavirus-infected patients in China. The literature related to SARS-CoV-2 nucleic acid testing in close contacts of novel coronavirus-infected patients in China was searched in PubMed, EMbase, China Journal Full-text Data Base (CNKI), Wanfang Science and Technology Journal Full-text Database, and Veep Chinese Science and Technology Journal Full-text Database (VIP) from December 2019 to December 2020. 24 December 2019-2020. The quality of the literature was evaluated with reference to the revised American Agency for Healthcare Research and Quality (AHRQ) statement. StataSE15.0 software was used for meta-analysis, combined positive rates were calculated using the Freeman-Tukey double inverse sine conversion method, subgroup analysis was performed according to sex, age, infected person relationship, mode of infection and frequency of exposure, and sensitivity analysis and Egger's method was used to test for publication bias. Results A total of 11 publications were included, with a total sample size of 24 906 cases. The SARS-CoV-2 nucleic acid positivity rate in the close contact population of novel coronavirus-infected patients was 5.42% (95% CI: 3.57%-7.64%), and subgroup analysis showed that the positivity rate was 4.35% in males and 6.36% in females;the positivity rate was 5.88% in the 0-9 years group and 4.76% in the 10-59 years group. The positive rates were 5.88% for the 0-9 years group, 4.76% for the 10-59 years group and 8.73% for the =60 years group;13.42% for family members and 2.09% for others;11.44% for people living together, 9.90% for meals and 1.95% for other modes of infection;and 1.32%, 6.12% and 9.60% for occasional, normal and frequent contacts, respectively. The differences between the subgroups were statistically significant (?2 = 37.89 to 809.90, all P < 0.05). The sensitivity analysis suggested stable results and the Egger's test for publication bias was not statistically significant (t=0.93, P=0.376). Conclusion Close contacts of novel coronavirus-infected individuals in the Chinese region have a positive rate for SARS-CoV-2 nucleic acid.

13.
Journal of Modern Laboratory Medicine ; 36(3):103-107, 2021.
Article in Chinese | GIM | ID: covidwho-2055550

ABSTRACT

This study aimed to evaluate the application and diagnostic efficacy of two different colloidal gold kits for the detection of 2019-nCoV immunoglobulin M antibody (anti-IgM) and immunoglobulin G antibody (anti-IgG) in Beijing, a low endemic area, and to guide the rational clinical application. The sera of 29 patients with confirmed novel coronavirus pneumonia (COVID-19) and 19 411 patients from the non-infected screening population were selected to evaluate the sensitivity, specificity and false-positive rate of the 2019-nCoV antibody test kits from Zhuhai Lizhu and Tangshan Innotek using colloidal gold immunochromatography. The sensitivity of Inotec 2019-nCoV was slightly higher than that of Lizhu 2019-nCoV, with a sensitivity of 58.62% and 55.17%, respectively;the specimen collection time of the all-negative group was significantly less than that of the antibody-positive group (P < 0.05);the false-positive rate of the two reagents in the low-prevalence area was 0.16%, and the false-positive rate of 2019-nCoV IgG was higher in Inotec than in Lizhu. The false positive rate for 2019-nCoV IgM was significantly higher than that for IgG for the same brand (Inotec ?2=14.756 09, P=0.000 0;Lizhu ?2=27.492 62, P=0.000). Conclusion The 2019-nCoV antibody test is rapid, simple and easy to perform, with high specificity, and can be used as a rapid screening indicator for new crowns;the specificity, correctness and negative predictive value of the two kits are good, and the application of the other kit for retesting when a positive result occurs can reduce the false positive rate of informing the clinic;the application and analysis of positive reports of new crown antibodies should be combined with the endemic area and clinical comprehensive judgment.

14.
Disease Surveillance ; 37(6):720-724, 2022.
Article in Chinese | CAB Abstracts | ID: covidwho-2055479

ABSTRACT

Objective: To assess the risk of public health emergencies, including both indigenous and imported ones, which might occur in the mainland of China in June 2022.

15.
Disease Surveillance ; 37(6):734-739, 2022.
Article in Chinese | GIM | ID: covidwho-2055478

ABSTRACT

Objective: This study conducted bibliometric analysis of COVID-19 related literature, to understand the research status of COVID-19, explore the latest progress and research trends in the field of COVID-19 research, and provide data support for the construction of a comprehensive and detail system based on COVID-19 literature.

16.
Disease Surveillance ; 37(6):740-744, 2022.
Article in Chinese | GIM | ID: covidwho-2055477

ABSTRACT

Objective: Taking the three outbreaks caused by Delta variant (B.1.617.2) in Guangzhou, Guangdong Province, Nanjing, Jiangsu Province and Zhengzhou, Henan Province as examples, to explore different transmission pattern of SARS-CoV-2 epidemic and to provide basis for scientific prevention and control.

17.
Disease Surveillance ; 37(6):850-854, 2022.
Article in Chinese | CAB Abstracts | ID: covidwho-2055474

ABSTRACT

Objective: To understand the epidemiological characteristics and explore source of infection of coronavirus disease 2019 (COVID-19) cases imported through an inbound air flight from Kenya to Guangzhou, China.

18.
Chinese Journal of Endemiology ; 40(8):616-621, 2021.
Article in Chinese | GIM | ID: covidwho-2055471

ABSTRACT

Objective: To investigate the risk factors of proteinuria in patients with hypertension in Qinghai-Tibet Plateau.

19.
Chinese Journal of Endemiology ; 40(8):660-663, 2021.
Article in Chinese | GIM | ID: covidwho-2055470

ABSTRACT

Objective: To investigate the correlation between thyroid function index and serum visfatin in patients with acute pancreatitis (AP).

20.
Land ; 11(6), 2022.
Article in English | CAB Abstracts | ID: covidwho-2055290

ABSTRACT

This paper examines the relationship between the rapid growth of online food purchasing and household food security during the first wave of the COVID-19 pandemic in China using the city of Nanjing as a case study. The paper presents the results of an online survey of 968 households in Nanjing in March 2020 focused on their food purchasing behavior and levels of food security during the early weeks of the pandemic. While online food purchasing has increased rapidly in many countries during the COVID-19 pandemic, little research attention has been paid to the relationship between online food purchasing and household food security. This paper provides detailed insights into this relationship in China. The medium- and longer-term food security and other consequences of the pandemic pivot to online food purchasing are a fertile area for future research in China and elsewhere.

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