• Annals of Clinical Neurophysiology
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• 제24권2호
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• pp.101-106
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• 2022

Neurological complications attributed to coronavirus disease-19 (COVID-19) infection have been reported including acute disseminated encephalomyelitis, Guillain-Barré syndrome, and so on. Herein, we report a 49-year-old woman presented with acute encephalopathy and paraplegia simultaneously after COVID-19 infection. Brain magnetic resonance imaging (MRI) showed symmetric hyperintense basal ganglia lesions on T2-weighted imaging. Cerebrospinal fluid pleocytosis, motor axonal neuropathy and enhancement of conus medullaris nerve roots on spine MRI were observed. We treated her with high-dose corticosteroid and intravenous immunoglobulin.

• 대한수의학회지
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• 제34권2호
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• pp.321-326
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• 1994

돼지 유행성 설사 바이러스(KPEDV-9)주를 이용하여 세포내 증식성을 비롯한 혈청학적 역학조사를 수행하였던 바 다음의 결과를 얻었다. 돼지 유행성 설사바이러스 국내 분리주는 Vero 세포에 연속계대시 증식성이 증가되었으며 90대 계대시 $10^{5.5}TCID_{50}/ml$의 역가를 나타내었다. 조직배양 순화주를 이용하여 간염세포내에서 20Kb 이상의 RNA가 존재함을 확인할수 있었으며 전자현미경 검사시 5~10nm의 외피항원 및 80~300nm크기의 coronavirus특징을 나타내었다. 설사증상을 나타내는 돼지의 장가검재료를 이용하여 유행성 설사 바이러스의 감염실태를 조사하였던 바 18%에 상당하는 감염 양성율을 확인하였으며 ELISA법에 의한 항체검사결과 전국적으로 약 45%의 항체 양성율을 나타내었다.

• 대한통합의학회지
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• 제9권1호
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• pp.109-121
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• 2021

Purpose : The first case of coronavirus disease-2019 (COVID-19) disease outbreak in Korea occurred in January 2020, and the cumulative number of confirmed cases by the Central Defense Response Headquarters of the Quality Management Administration as of November 30 was 34,201. Looking at the incidence trend of domestic confirmed cases by age, the incidence rate of COVID-19 in the age group of 20-29 years, which corresponds to college students, was 27.4 %, the highest compared by age group. Considering the current status of the infection rate, universities will become the centers of new COVID-19 cases if face-to-face lectures are recommenced without preparatory measures and analysis of infection prevention (e.g., infection awareness and education for university students). Thus, this study intended to investigate the level of knowledge, educational needs, and preventive behavior performance of college students about COVID-19 and provide basic data for the development of an education program for the prevention of COVID-19 for college students. Methods : This study is a descriptive correlational study aimed to investigate the correlation between knowledge about COVID-19, educational needs, and degree of preventive behavior performance in 407 college students attending one University in Gyeonggi-do. Results : The subjects' knowledge score about COVID-19 was 12.46±1.39 points, average educational needs score was 29.16±3.14 points, and prevention behavior performance survey result was 35.50±3.61 points. Moreover, positive correlation was observed between the knowledge about COVID-19 and educational needs (r=.203, p<.001) and knowledge and preventive behavior performance (r=.140, p=.005). Further, educational needs and preventive behavior performance demonstrated a statistically significant positive relationship (r=.311, p<.001). Conclusion : Therefore, organizing an educational program to acquire accurate knowledge is necessary to make it a habit for college students to practice preventive behavior against COVID-19.

• International Journal of Computer Science & Network Security
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• 제22권6호
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• pp.131-138
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• 2022

Novel Coronavirus (COVID-19) is viewed as one of the main general wellbeing theaters on the worldwide level all over the planet. Because of the abrupt idea of the flare-up and the irresistible force of the infection, it causes individuals tension, melancholy, and other pressure responses. The avoidance and control of the novel Covid pneumonia have moved into an imperative stage. It is fundamental to early foresee and figure of infection episode during this troublesome opportunity to control of its grimness and mortality. The entire world is investing unimaginable amounts of energy to fight against the spread of this lethal infection. In this paper, we utilized machine learning and deep learning techniques for analyzing what is going on utilizing countries shared information and for detecting the climate factors that effect on spreading Covid-19, such as humidity, sunny hours, temperature and wind speed for understanding its regular dramatic way of behaving alongside the forecast of future reachability of the COVID-2019 around the world. We utilized data collected and produced by Kaggle and the Johns Hopkins Center for Systems Science. The dataset has 25 attributes and 9566 objects. Our Experiment consists of two phases. In phase one, we preprocessed dataset for DL model and features were decreased to four features humidity, sunny hours, temperature and wind speed by utilized the Pearson Correlation Coefficient technique (correlation attributes feature selection). In phase two, we utilized the traditional famous six machine learning techniques for numerical datasets, and Dense Net deep learning model to predict and detect the climatic factor that aide to disease outbreak. We validated the model by using confusion matrix (CM) and measured the performance by four different metrics: accuracy, f-measure, recall, and precision.

• 한국컴퓨터정보학회논문지
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• 제28권2호
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• pp.171-179
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• 2023

이 연구는 코로나19 팬데믹 상황이후 치과감염관리실태를 알아보고자 시행하였다. 치과위생사들을 대상으로 코로나19에 관한 지식과 감염관리인식, 감염관리실행정도를 파악하고, 이들 사이의 연관성을 측정하였다. 일반적 질문 9개, 코로나19 지식 10개, 감염관리에 대한 인식과 실행에 관한 36개 문항으로 이루어진 설문지를 이용하여, 2021년 5월 1일부터 31일까지 조사된 120부를 분석하였다. 분석을 위하여 T검정, 분산분석, 피어슨의 상관관계를 이용하였다. 연구결과, 코로나19 지식은 10점 중 6.59점, 감염관리 인식은 4점 중 3.57점, 감염관리 실행은 4점중 3.55점이었다. 코로나19 지식과 감염관리 실행은 0.485 양의 상관관계, 감염관리 인식과 감염관리 실행은 0.614 양의 상관관계로 코로나19 지식보다 상관관계가 유의미하게 높았다. 코로나19와 같은 감염병을 차단하기 위해서는, 치과에서 치과위생사들에게 감염관리에 대한 교육을 의무화하고, 치과감염관리 매뉴얼에 따라 감염관리 실행을 의무화해야 할 것이다.

• 한국동물위생학회지
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• 제46권1호
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• pp.47-58
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• 2023

Between February 2020 and September 2021, 378 calves with diarrhea were investigated across 96 cattle breeding farms in Korea, using a rapid diagnostic kit. The study examined the infection rates of major pathogens causing diarrhea in calves, which were categorized by season, age, birth month, and region. Additionally, logistic regression analysis was conducted to investigate the factors affecting the infection rate. The study found that the five representative pathogens causing calf diarrhea exhibited differences in infection rates based on season, region, age, and birth month. Bovine rotavirus, bovine coronavirus, Cryptosporidium, and Giardia commonly exhibited varying risks of infection based on season and age. Furthermore, in addition to these risk factors, bovine rotavirus and Cryptosporidium were found to impact the infection risk of each pathogen by region, while Giardia was found to be affected by birth month.

• Pediatric Infection and Vaccine
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• 제27권1호
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• pp.11-23
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• 2020

2019년 12월 발견되어 2020년 3월 11일 전 세계 대유행이 선포된 코로나바이러스감염증-2019 (coronavirus disease-2019, COVID-19)는 신종 감염병으로서 수많은 감염사례와 사망을 초래하여 사회 전반적으로 영향을 끼치고 있다. 소아청소년 COVID-19는 발병 환자 중 차지하는 비율이 적으며 성인보다는 경증인 경우가 많으나, 일부에서는 중증으로 진행할 수 있다. 신생아 시기부터 감염될 수 있으며, 지역사회 감염의 전파자로서 역할을 할 수 있을 것으로 보인다. 본 종설에서는 현재까지 소아청소년에서의 COVID-19에 대해 알려진 내용을 정리하여 소아청소년 환자들의 진료에 도움을 주고자 한다.

• Pediatric Infection and Vaccine
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• 제27권1호
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• pp.24-34
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• 2020

대한소아감염학회와 질병관리본부 중앙방역대책본부는 소아청소년 코로나바이러스감염증-19 (coronavirus disease 2019, COVID-19) 대응지침을 발표하였다. 사례정의 및 조치사항을 신생아, 영아, 소아청소년에 맞추어 정리하였으며, 보호자 관리에 대한 지침을 마련하였다. 본 종설에서는 우리나라 소아청소년 COVID-19 대응지침의 내용을 소개하고자 한다.

• 대한수의학회지
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• 제45권2호
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• pp.215-221
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• 2005

Canine coronavirus (CCV) causes a mild gastroenteritis in dogs. The virus is highly contagious. Although the virus was isolated more than thirty years ago, canine coronavirus infection continues to be a widespread problem. Mixed infections with both CCV and canine parvovirus (CPV) are common. Four kinds of commercial killed CCV vaccines are available in Korea. All the commercial vaccines should pass the National Assay for Veterinary Biologicals prior to release. For the potency test of CCV vaccine, it is necessary to use CCV antibody free dogs. The test requires not only kennels but high cost. To develop easy, efficient and economic potency test method for killed CCV vaccine using laboratory animals, a series of experiments with rabbits and guinea pigs were carried out in this study. In the preliminary test, the guinea pigs showed better immune responses than rabbits. The guinea pig was also easy to manage. So guinea pig was selected for the potency test animals. When the guinea pigs were inoculated twice with one dose of vaccine intramuscuarly each, slower and a little lower SN antibody titers were induced in guinea pigs than in dogs (about 2 kg body weight Beagle strain) given the same posology as guinea pigs'. It was concluded that guinea pigs could be substituted for dogs in the potency test of killed CCV vaccine.

• 치위생과학회지
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• 제22권3호
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• pp.180-190
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• 2022

Background: Like direct infection from COVID-19, psychological concern about infection could affect health. Concern about COVID-19 infection was associated with individual habits to practice rules for preventing infection. Therefore, this study aimed to check occupational types and whether to practice tooth brushing after lunch depending on the occupation of economic workers and find correlations between concerns about infection due to COVID-19 pandemic and tooth brushing after lunch. Methods: The raw data was from the community health survey conducted in 2020. Among 229,269 adult participants aged 19 years and older, 138,970 economic workers were included in the final analysis. The chi-squared test was used to find differences in psychological concerns due to the COVID-19 pandemic. According to the participants, the rate of practicing tooth brushing after lunch was based on COVID-19-related psychological concerns. Multiple logistic regression analysis was conducted to check the influence of psychological concerns due to the COVID-19 pandemic on the rate of practicing tooth brushing after lunch. Results: According to occupational classifications, professionals and office workers and career soldiers had 1.551- and 1.581-times higher practicing rates than managers, respectively, whereas machine operators, agricultural and fishery sector workers, and daily laborers had lower practicing rates. Regarding COVID-19-related psychological concerns, the group with a lower concern about infection had a 1.076 times higher practicing rate than that with greater concern. The group with greater concern about blame from neighbors had 1.119 times higher practicing rate than that with lower concern. Conclusion: The correlations between higher economic workers' concerns about infection and blame from neighbors and higher recognition of the necessity to prevent COVID-19 and practice tooth brushing after lunch were confirmed. It is necessary to prepare measures for practicing tooth brushing after lunch suitable to the characteristics of occupational types and work environments of economic workers.