According to information from the Center for Health Protection on2024/4/28:

Currently, there is an increasing trend in the activity of SARS-CoV-2 and seasonal influenza viruses. Apart from vaccination, in order to prevent infection of COVID-19, influenza and other respiratory illnesses as well as transmission in the community, the public should maintain strict personal and environmental hygiene at all times.Therefore, it is recommended thatstudents wear masks when returning to school. If they feel unwell, they must rest at home until their bodies recover.