indirect contact

The virus is spread among pigs by aerosols, direct and indirect contact, and asymptomatic carrier pigs.

这种病毒在猪中通过气溶胶 、 直接或间接接触以及携带病毒的无症状的猪传播.

As a mildly contagious disease, papillomatosis is transmitted by both direct and indirect contact.

乳头瘤病为一种轻度的接触性传染病，可由直接或间接接触而传播。

Indirect contact is essential character of the mediate conception.

间接联系是中介概念最本质的特征，脱卸具有这种间接联系的特点，用于表征上下情节联系的间接性，而不是表示某个情节段落的结束。

With respect to the mode of transmission, 85.71% had direct or indirect contact with animals and animal products through livestock slaughtering and sales, processing and consuming of lamb and sheep placenta and indulging in roadside barbecued beef and lamb balls.

接触史：在牲畜屠宰、销售过程中或加工进食羊仔和羊胎盘及嗜食路边烧烤牛、羊肉串，与畜及畜产品有直接或间接接触史的占85.71%；