The large-scale coronavirus epidemic is a major global public health challenge in the 21st century. Since the 2003 Severe acute respiratory syndrome (SARS) epidemic spread globally and caused hundreds of deaths, the Middle East respiratory syndrome (Middle East respiratory syndrome, MERS) and coronavirus disease 2019(COVID-19) has caused a large-scale global spread and also caused a huge impact on the public health and medical system. In the country's current epidemic (Aug 1, 2021), more than 15,000 people have been diagnosed, and the number of deaths has exceeded 800. Among them, the Taipei epidemic is the most severe, and the Wanhua District of Taipei City is the hot zone. The investigators will discuss the changes in accumulation incidence rate(CIR) of the community and the epidemic prevention effect of using Chinese medicine during the SARS-CoV-2 outbreak.~This is a retrospective case study to explore the effect of traditional Chinese medicine on the prevention of SARS-CoV-2 and discuss if there are related side effects after taking Chinese medicine.
Taking a regional hospital as an example, the investigators will discuss the changes in the community cumulative incidence rate(CIR) and the epidemic prevention effect of using Chinese medicine during the SARS-CoV-2 outbreak.~Main purpose:~Retrospective case study to explore the effect of traditional Chinese medicine on the prevention of SARS-CoV-2.~Secondary purpose:~If there are related side effects after taking Chinese medicine.