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This study analysed the social situation in Korea caused by the Corona pandemic, as shown in YouTube videos between January 2020 when the Corona pandemic began in Korea and December 2021, about two years later, along with its characteristics. The aim of the study was to derive lessons for future quarantine policies. First, the two-year period was divided into three phases in consideration of trends in the number of Corona patients. Then, for each period, YouTube videos created during this period were analysed using text network analysis and the system dynamics analysis method, both of which represent a kind of big data analysis method. This analysis method is new, and is highly significant in terms of research methodology. In addition, the analysis results provide important policy implications. One important policy meaning is the derivation of the reinforcing loop and balancing loop that policymakers should consider for each period.

The aim of this study is to analyse the roles played by medical personnel such as doctors and nurses in Korea in the context of Covid, and to suggest directions for responding to possible pandemics in the future from the perspective of the roles of medical personnel. For this analysis, Korean YouTube video contents were analysed; the analysis methods employed were text-mining and ego network analysis. The analysis target period was 2020, the year in which the Corona pandemic was declared, and 2021, one year after the declaration of the pandemic. As a result of the analysis six themes, derived from the perspective of the role of medical professionals, were selected in respect of each year. In the future, the Korean medical policy decision-making process should aim to reflect these topics.