Communicable Disease Control Act Article 18

Competent authorities, in times of serious domestic or international epidemic conditions of communicable diseases or biological agent attacks, may implement relevant disease control measures in coordination with the national defense mobilization preparedness system.
中文原文 傳染病防治法第18條
主管機關於國內、外發生重大傳染病流行疫情,或於生物病原攻擊事件時,得結合全民防衛動員準備體系,實施相關防疫措施。

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