病毒的自然宿主：未知。

Natural reservoir of the virus. Unknown.

youdao

猪是该病毒的自然宿主和贮存者。

The natural host and reservoir for this virus is the pig.

youdao

自然阴转可使宿主传染性降低或消失，病情趋于稳定。

Natural Yin turn can make host infectious reduce or disappear, disease remained stable.

youdao

自然阴转可使宿主传染性降低或消失，病情趋于稳定。

Natural Yin turn can make host infectious reduce or disappear, disease remained stable.

youdao