Communicable Disease Control Act Article 8

The determination, announcement, and removal of epidemic conditions of communicable diseases and their affected areas shall be made by the central competent authority. For category 2 and category 3 communicable diseases, the aforementioned actions shall be done by the local competent authorities and reported to the central competent authority for record-keeping at the same time.The central competent authority shall announce international epidemic conditions or relevant warnings in a timely manner.
中文原文 傳染病防治法第8條
傳染病流行疫情、疫區之認定、發布及解除,由中央主管機關為之;第二類、第三類傳染病,得由地方主管機關為之,並應同時報請中央主管機關備查。
中央主管機關應適時發布國際流行疫情或相關警示。

English translation for reference only; the Chinese text prevails. Not legal advice.