Here are three prevention tips.

这里是三个预防贴士。

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America's Centers for Disease Control and Prevention says the disease will infect three hundred fifty million to five hundred million people around the world this year.

VOA: special.2010.04.20

The data from both less-reliable observational studies and clinical trials was conflicting, and Merck began three big cancer prevention studies that could also assess any risk Vioxx caused to the heart.

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According to the Centers for Disease Control and Prevention, three out of every 1, 000 school-age children are believed to have Tourette syndrome.

CNN: At Camp Twitch and Shout, Tourette kids can be themselves

"In these last three months, governments have rapidly strengthened their pandemic stockpile and prevention strategies, " said GlaxoSmithKline's chief executive, Andrew Witty.

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