Task: Translation
Input (Japanese): 保護地帯は感染している地域の周りに設定され、接触伝染病の蔓延を防ぐ目的で、家畜の移動を禁止する規則が全国に導入された。
Output (English): A protection zone has been set up around the affected areas and rules preventing the movement of livestock have been introduced throughout the country, with the aim of stopping further spread of the contagious disease.