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2.
Journal of Urology ; 207(5):E596-E596, 2022.
Article in English | Web of Science | ID: covidwho-2068150
3.
J Hosp Infect ; 131: 1-11, 2022 Oct 03.
Article in English | MEDLINE | ID: covidwho-2049484

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.

4.
Aerosol and Air Quality Research ; 22(10), 2022.
Article in English | Web of Science | ID: covidwho-2024889

ABSTRACT

To evaluate the difference in hazardous air pollutants in PM2.5 between reference method (National Institute of Environmental Analysis;NIEAA205) and high-volume air sampler (European standard:EN14907 and Japan method), we set up a sampling station on the campus of National Yang-Ming Chiao Tung University, northern Taiwan, during 2014-2015. Both vapor and solid phases of dioxins were collected using high-volume samplers, according to EN14907 and Japan method. The flow rate was set at 500 L min(-1) and 1000 L min(-1), respectively. To compare the difference with the high-volume air sampler, we simultaneously used the reference air sampler based on Taiwan NIEA A205.11C, at the flow rate of 16.7 L min(-1) (BGI PQ200-FRM). The mass concentrations of PM2.5 measured with NIEA A205, EN14907, and Japan method were 20.2 +/- 8.79, 25.4 +/- 10.5 and 28.6 +/- 13.9 mu g m(-3), respectively. The difference of the mass concentration of PM2.5 obtained from two different methods was lower than 3.9%. Moreover, the concentrations of PCDD/F between solid and vapor phases were 56.9-1,090 and 38.6-67.1 fg m(-3) via EN14907 and 51.1-1,150 and 18.4-81.8 fg m(-3) via Japan method, respectively. Obviously, there is no significant difference between these two samplers. Compared to the method of NIEA, high volume air sampling method not only provided equivalently good quality data but offer a higher sample quantity for analyzing the trace level chemical component of hazardous air pollutants and the toxicity in different areas.

5.
Digital Health ; 8:16, 2022.
Article in English | Web of Science | ID: covidwho-1916883

ABSTRACT

In many regions of the world, with the gradual increase in the supply of COVID-19 vaccines, COVID-19 vaccination has changed from centralized government control to personalized selection. When choosing a location for COVID-19 vaccination, in addition to subjective preferences, objective information (such as the expected waiting time at a COVID-19 vaccination location and the crowdedness and reliability of the vaccination location) also need to be considered. However, it is not convenient for an individual to collect and compare such information. To address this issue, this research applies web content mining to extract the conditions of COVID-19 vaccination locations. Then, a novel asymmetric calibrated fuzzy inverse of column sum and fuzzy Vise Kriterijumska Optimizacija I Kompromisno Resenje recommendation mechanism is proposed. Finally, an intelligent system is developed to assist a user in selecting a personalized COVID-19 vaccination location. In a regional experiment conducted in Taichung City, Taiwan, the developed intelligent system was applied to assist 20 users in choosing personalized COVID-19 vaccination locations. The successful recommendation rate was 95%.

6.
Journal of Urology ; 207(SUPPL 5):e596, 2022.
Article in English | EMBASE | ID: covidwho-1886517

ABSTRACT

INTRODUCTION AND OBJECTIVE: Organs from deceaseddonors who tested positive for COVID-19 were thought to be ineligible for transplantation. Despite lack of evidence showing that COVID-19 can be transmitted through urine or blood. We began to transplant kidneys from COVID-positive deceased-donors in February 2021 and this report comprises our early outcomes in this patient cohort. METHODS: From Feb 2021 to Oct 2021, 55 patients underwent kidney transplantation from 34 COVID-19 positive donors. Prior to initiating this clinical practice, formalized selection criteria for organs from COVID-19 positive deceased-donors were adopted by transplant surgeons, transplant nephrologists, and infectious disease physicians. If a deceased-donor suited these pre-determined criteria, individual kidney selection followed our usual programmatic criteria. RESULTS: The mean donor age was 34±13.7 years with a mean kidney donor profile index (KDPI) of 36.9±22.7%. All donors had at least 1 positive COVID-19 test from the nasopharyngeal ribonucleic acid swab test within a median of 4 (0-76) days prior to declaration as a deceased-donor. Extracorporeal membrane oxygenation (ECMO) was used in 6 donors. The initial and terminal mean creatinine was 1.1±1.1 mg/dl and 1.0±0.4 mg/dL. This patient cohort includes 36 male recipients and 19 female recipients. Mean age among all recipients was 51.2±13.5 years. Thirty-seven recipients (66.7%) were dialysis dependent. A similar proportion (67.3%) had received both COVID-19 vaccine doses. Delayed graft function occurred in 19.6% of the recipients. No patient tested positive for COVID-19 after surgery. At a mean follow up duration of 3.5 months, all kidney allografts are functioning, with a mean serum creatinine of 1.6±0.7 mg/dl. One patient underwent allograft nephrectomy at 1.5 months post-transplant due to Pseudomonas aeruginosa vascular infection. CONCLUSIONS: Transplantation of kidneys from COVID-19 positive donors is safe. Outcomes are comparable to kidneys from regular donors.

7.
Journal of Men's Health ; 18(3), 2022.
Article in English | EMBASE | ID: covidwho-1780435

ABSTRACT

Background: Children are a vulnerable population in terms of the impact of COVID-19 on their psychological well-being. When restricted to their homes, children are susceptible to problematic Internet gaming (PG). Primary school boys are particularly at risk of PG, which may lead to negative psychological effects, such as distress. Emerging research has identified perceived weight stigma (PWS) as a variable closely associated with both PG and psychological distress, particularly during the COVID-19 pandemic. The purpose of this study was to evaluate the trajectory of psychological distress among this vulnerable population from a longitudinal perspective, evaluating the role of PG and PWS. Methods: Self-report measures were used to assess psychological distress, PG, and PWS among primary school boys (grades 4 to grade 6; N = 283). Data were collected across three waves: before the pandemic, during school closure, and following the lifting of restrictions. Results: The trajectory of psychological distress among primary school boys was concave, indicating their mental health was negatively impacted during home restriction but recovered after the lockdown ended (linear change = 0.98, p < 0.01; quadratic change = -0.19, p < 0.01). PG was a significant covariate in terms of the trajectory of psychological distress (b = 0.02, p < 0.01). Moreover, baseline values for PWS were shown to have a negative direct effect on mental health before the pandemic (b = 0.05, p < 0.01), and moderated the time factor for boys' psychological distress over time (b of PWS × linear change = 0.04, p = 0.006; b of PWS × Quadratic change was negative at -0.01, p = 0.002). Conclusions: Although mental health gradually improved as home restrictions subsided, future studies are required to address changes in mental health upon return to school for students reporting higher levels of weight stigma.

8.
2021 International Conference on Health Big Data and Smart Sports, HBDSS 2021 ; : 1-4, 2021.
Article in English | Scopus | ID: covidwho-1752341

ABSTRACT

The half marathon approximately 21 kilometers started in the 1980s, and the marathon has shown a diversified development since then. The focus of this research is on the marathon in Taiwan before the COVID-19 pandemic. The selected research method is to integrate the attribute data and spatial data on the GIS platform. Preliminary information on the GIS platform shows that all types of events are held in the western part of the eastern part. The full marathon type shows that the northern metropolitan area and the central metropolitan area are the main event venues in the spatial distribution analysis. Subsequent research data shows that the spatial distribution of the city where the semi marathon is that almost all administrative regions have races. The distribution of half-marathon events is relatively balanced and almost every region has such sport events. © 2021 IEEE.

9.
Journal of Theoretical and Applied Electronic Commerce Research ; 16(7):3282-3298, 2021.
Article in English | Web of Science | ID: covidwho-1613876

ABSTRACT

Most of the existing ubiquitous clinic recommendation (UCR) systems adopt linear mechanisms to aggregate the attribute-level performances of a clinic to evaluate the overall performance. However, such linear mechanisms may not be able to explain the choices of all patients. To solve this problem, the modified mixed binary nonlinear programming (MMBNLP)-feedforward neural network (FNN) approach is proposed in this study. In the proposed methodology, first, the existing MBNLP model is modified to improve the successful recommendation rate using a linear recommendation mechanism. Subsequently, an FNN is constructed to fit the relationship between the attribute-level performances of a clinic and its overall performance, thereby providing possible ways to further enhance the recommendation performance. The results of a regional experiment showed that the MMBNLP-FNN approach improved the successful recommendation rate by 30%.

10.
Aerosol and Air Quality Research ; 21(12):17, 2021.
Article in English | Web of Science | ID: covidwho-1580176

ABSTRACT

There are around 300 night markets in Taiwan, and they have been drawing an increasing number of tourists in recent years. As a result, public awareness over air quality in the night markets has grown tremendously. In response to this, a specific night market in Kaohsiung City was chosen for this study in order to characterize the existing air quality in and around the night markets. In this present study, we employed an Industrial Source Complex Short-Term (ISCST3) air quality model for the simulation of PM2.5 diffusions. The model as a technique can simulate the pollutants emissions, diffusions, transportation, and pollution sources in specific areas and subsequently evaluate the influence between the source and the receiver. Therefore, we compared pollutants emissions data from several air quality monitoring stations with our sampling data of three different sampling sites in Kaohsiung City. The findings of this study showed that the average concentration of PM2.5 was in the range of 29-61 mu g m(-3) during opening hours of the night market, whereas the average concentration of PM2.5 range was between 22-38 mu g m(-3) before the night market opening hours. The concentration of metallic elements (ME) (Mg, Na, Cr, Mn, Fe, Cu, Al, Ba, Cd, Pb and Ca) was determined with the support of Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). During the night market opening hours, the result disclosed that the ME concentrations in PM2.5 was in an increasing order as follows: Na > Fe > Al > Ca. With respect to the concentration of carbonaceous species, our results showed that the highest total carbon (TC) concentration was found to be 6.52 mu g m(-3) during the downwind sampling interval. The highest elemental carbon (EC) and organic carbon (OC) concentration were found to be 6.53 mu g m(-3) and 2.70 mu g m(-3) of the PM2.5 concentration, respectively. This study's findings have significant consequences for Taiwan policymakers and urban planners, particularly those responsible for coordinating environmental protection and economic development in cities. Therefore, policy actions to abate urban air pollution can be attained on diverse governing echelons, resulting in synergistic effects such as a reduction in climate change impacts.

11.
Aerosol and Air Quality Research ; 21(10):16, 2021.
Article in English | Web of Science | ID: covidwho-1481095

ABSTRACT

Long-range pollution transport (LRT) events have a wide impact across East Asia, but are often difficult to track due to imprecise emission inventories and changing domain scales as the plume moves from source to receptor locations. This study adjusts a bottom-up emission inventory based on changes in remotely sensed NO2 column densities for a source region of East Asia, then with CMAQv5.2.1 simulates transport of LRT plumes to Taiwan. Adjustment of an emissions inventory based on satellite measurements during the COVID-19 lockdown in China led to a -59% reduction in emissions over the relevant source area in China compared to base emissions. As a result, PM2.5 mass concentrations were reproduced to match observations (mean fractional bias, MFB of -13.9% and 18.5% at a remote and urban station) as the plume passed through northern Taiwan. Furthermore, the OMI-adjusted emissions simulation brought all of the major PM2.5 components to within -50% of the measured values. Another LRT event from 2018 with more subtle OMI-adjustments to the emissions was also simulated and with improved overall PM2.5 mass concentration at the northern tip of Taiwan (MFB: -91.5%) compared to the base model (MFB: -102.1%), and an acceptable index of agreement (0.78). For the 2018 event, non sea-salt sulfate concentrations were consistently underpredicted (0.2-0.4), while nitrate concentrations were overpredicted by up to factor of 11. Copernicus Atmosphere Monitoring Service (CAMS) reanalysis of the PM(2.)5 concentrations shows high sulfate concentrations in eastern China in the areas associated with 72-h back-trajectories from northern Taiwan during both events, lending support for future model investigations of sulfate source area production and transport to Taiwan. In order to better track these LRT events out of East Asia and optimize OMI-adjustment methodology, it is recommended to explore other satellite-based products to map unaccounted for SO2 sources upstream of Taiwan.

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