Mother-to-child infection: the trypanosome can cross the placenta and infect the fetus.

母婴感染：锥虫可穿过胎盘并感染胎儿。

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By using the corresponding measures and solutions, we can prevent and control the occurrence of cross infection effectively.

采取相应的对策和措施，可以有效地预防控制口腔科门诊交叉感染的发生。

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In the prevention, it is important to avoid cross infection between husband and wife, as well as the spread of indirect goods and mother to child transmission.

在对预防中，就要避免夫妻间的交叉感染、以及一些间接物品的传播和母婴传播都是很重要的方式。

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Supporters of growth promoters will point to the lack of cases in the field of cross infection or gene transfer.

BBC: Animals and antibiotics: the risks

The device is small enough to be worn under clothing, and is disposable, so risk of cross-infection from other patients is eliminated.

CNN: Health

Experts say that cross-infection to humans is still relatively rare and usually occurs where people have been in close contact with infected birds.

BBC: NEWS | Africa | Africa bird flu disaster warning