What should I do if a new coronavirus infection is confirmed at home, in acquaintances, friends, etc.

With the transition of the new coronavirus infection to Class 5 infectious disease on May 8, 2023, you will not be required to refrain from going out based on the Infectious Diseases Control Law as a close contact.
However, if your family or cohabitant is infected with the new coronavirus, you and others may be infected, so please take measures to prevent infection, such as wearing a mask. Please pay attention to your physical condition for about 5 days after infection, and if you feel any unusual physical condition, we recommend a self-test using an antigen test kit.