墨西哥农业部长：为了打击螺旋虫，将对来自该国南部的牛只流通进行更严格的限制，但不考虑关闭南部边境。

Core Viewpoint - The Mexican Agriculture Minister announced stricter restrictions on the circulation of cattle from the southern region of the country to combat the spread of spiraling worms, but there are no plans to close the southern border [1] Group 1 - Stricter regulations will be implemented for cattle movement from southern Mexico to address health concerns related to spiraling worms [1] - The decision aims to enhance biosecurity measures without resorting to closing the southern border [1]