Objective To study on the method for preventive use of antibiotics in selective cesarean section.

目的探讨选择性剖宫产术预防性应用抗生素的方法。

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So their preventive use is typically for short-term situations, such as for family members of someone who has the flu.

因此，它们一般只具有短期的预防作用，如在某位家庭成员感染流感的情况下。

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OBJECTIVE: the preventive use of antibiotics before operation and examine the effect of preventing infective complications.

目的：术前预防性应用抗生素，以观察感染性并发症的预防效果。

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The U.N.AIDS agency gives credit to better use of preventive measures.

VOA: special.2010.07.14

Often because of cost, Americans use preventive services at about half the recommended rate, according to research cited by the White House.

WSJ: White House to Unveil List of Free Preventative Services

Currently, Americans use preventive services at only about half the recommended rate.

WHITEHOUSE: Blog Posts Related to the African American Community

Use of preventive services can also help bring costs down in a variety of ways.

WHITEHOUSE: Blog Posts Related to the African American Community