From this we could know that Li-jie disease had a relation with affection of wind pathogen.

从篇名可知历节病与中风有一定的联系。

youdao

Infection of PRRSV can not only damage the immunity of the swine but also cause secondary affection or complicating disease involved other pathogenic microorganism, which exacerbates the situation.

PRRSV感染能降低猪体免疫力，常引起其他病原微生物的继发或并发感染，加重病情。

youdao