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1.
Revista de Investigacion en Agroproduccion Sustentable ; 6(1):1-9, 2022.
Article in Spanish | CAB Abstracts | ID: covidwho-2056879

ABSTRACT

Efficiency in shrimp farming is due to the use of an extensive system that includes fewer larvae per pool, which increases productivity, improves financial results, and even the environmental impacts generated during these operations. The objective of this study was to identify the factors that affect supply in the Ecuadorian shrimp sector. To this end, some statistical techniques such as linear regression and hypothesis testing were used. A bibliographic study was carried out regarding shrimp production in Ecuador, taking as reference the data provided by the National Chamber of Aquaculture and public control entities and reviewing the unprecedented impact on the current COVID19 sanitary crisis and the reduction of shrimp demand affecting Ecuador's income. Finally, it was observed that the research variables considered directly impact crustacean production, and a mathematical model was established.

2.
Dermatologia, Revista Mexicana ; 66(1):16-24, 2022.
Article in Spanish | GIM | ID: covidwho-2056849

ABSTRACT

BACKGROUND: During the pandemic, the use of multiple products for disinfection and prevention of COVID-19 transmission was widespread, many of them topically administered. OBJECTIVE: To determine the prevalence and factors associated with the perception and use of topical products for the prevention of COVID-19 in Peruvian populations., MATERIALS AND METHODS: Analytical cross-sectional study of secondary data analysis was done applying a survey to Peruvian adults, who were asked about the belief or use of different products, according to whether they believed in or used at least one of them. In addition, the association was sought according to socio-educational and occupational characteristics. RESULTS: There were included 3509 participants. The product that they perceived the most that could prevent COVID-19 was the mixture of 4% sodium hypochlorite, vinegar and alcohol (37%), but the one they used the most was 4% sodium hypochlorite (11%). In the multivariate analysis, it was found that women were those who had a positive perception of the topical use of these products (p value < 0.001), adjusted for the marital status of the respondents. However, when the use was analyzed, women were the ones who used these products the least (p value = 0.028), those who were working used these products the most (p value = 0.010). CONCLUSIONS: The results show that the Peruvian population does not perceive or use topical products to prevent COVID-19.

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.
Saude e Pesquisa ; 14(2):333-340, 2021.
Article in Portuguese, English | CAB Abstracts | ID: covidwho-2056619

ABSTRACT

The aim of this study was to identify the incidence of COVID-19 according to the positivity of the rapid tests and the associated factors in the population of the state of Para. This is a cross-sectional, analytical, retrospective study, developed with cases of COVID-19 in individuals notified and residing in the state of Para. Information was collected on the State Transparency Portal. Positivity for rapid tests of the disease was considered as the outcome variable. Logistic regression analysis was applied to identify associations between variables. The incidence of COVID-19 was 46% (95% CI: 45.7-46.2). Being male, over 80 years old and waiting 22 days or more to perform the tests after the onset of symptoms increased the chances for a positive result. It can be concluded that there is a high incidence of COVID-19 in the state. Non-pharmacological measures and case tracking strategies are important alternatives to mitigate the pandemic.

5.
Saude e Pesquisa ; 14(2):247-259, 2021.
Article in Portuguese, English | CAB Abstracts | ID: covidwho-2056618

ABSTRACT

This study aimed to assess the quality of life (QOL) of dental students in the 2019 Coronavirus Disease pandemic (COVID-19). A cross-sectional study was carried out with undergraduate students in Dentistry from Higher Education Institutions (HEIs) in the state of Ceara, Brazil. Data collection took place in May 2020, online, using questionnaires with sociodemographic, course-related and behavioral variables, in addition to the World Health Organization Questionnaire for Quality of Life-bref (WHOQOL-bref). Multinomial logistic regression was performed. 864 students participated in this study. Variables such as higher income (p = 0.034), having religion (p = 0.010), having health insurance (p = 0.005), satisfaction with sleep quality (p < 0.001), absence of insomnia (p < 0.001) and practicing physical activity always (p < 0.001) were associated with greater satisfaction regarding QOL. The QoL of dental students was classified in the dissatisfaction category, being perhaps impacted by the pandemic of COVID-19. Variables that reflected a more economically favorable living condition were associated with satisfaction with the quality of life of this public in the COVID-19 pandemic.

6.
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.

7.
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.

8.
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.

9.
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.

10.
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.

12.
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.

13.
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.

14.
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.

15.
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.

16.
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.

17.
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.

18.
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.

19.
Disease Surveillance ; 37(6):802-806, 2022.
Article in Chinese | GIM | ID: covidwho-2055475

ABSTRACT

Objective: To introduce the principle and method ofa-Sutte model, establish a a-Sutte model by using software R, compare the fitting and prediction effects of thea-Sutte model and multiple seasonal autoregressive integrated moving average model, SARIMA model and provides reference for the application of thea-Sutte model in epidemic prediction.

20.
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.

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