The ultimate social network is still being mapped out, but Christakis says, "People are interconnected, so their health is interconnected."

终极社交网络仍在规划中，但克里斯塔基斯说：“人们是相互联系的，所以他们的健康也是相互影响的。”

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Christakis says his study did consider these factors.

（克里斯塔克斯说他的研究的确考虑了这些因素）。

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Dr Christakis used what is known as a public-goods game for his experiment.

Dr Christakis在他的试验中使用了一种被称作公用品的游戏。

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Nicholas Christakis and James Fowler based the study on the emotional health of almost 5,000 people.

VOA: special.2009.01.21

Doctor Dimitri Christakis of the Seattle Children's Hospital worked on the study.

VOA: special.2009.02.03

Doctor Dimitri Christakis at Seattle Children's Hospital worked on the research.

VOA: special.2009.02.18

"One of the strengths of the iPad" it is interactive "may be the weakness, " Dr. Christakis says.

WSJ: What Happens When Toddlers Zone Out With an iPad

In his book, Death Foretold: Prophecy and Prognosis in Medical Care, Nicholas Christakis illuminates the many forces leading to this behavior.

FORBES: Do Oncologists Lie to Their Patients About Their Prognoses?

Traffic to Nokia's custom site and its general career page increased immediately after the events, says Nokia's global university relations manager Emily Christakis.

WSJ: On the Hunt for Tech Hires