A mild, contagious skin disease of cattle, usually affecting the udder, that is caused by a.

病毒感染引起的一种急性传染病，患者主要是儿童，症状为皮肤发疹、低烧以及浑身虚弱。

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A mild, contagious skin disease of cattle, usually affecting the udder, that is caused by a.

病毒感染引起的一种急性传染病，患者主要是儿童，症状为皮肤发疹、低烧以及浑身虚弱。

youdao