The Domino Effect of Negative Tweets (Mashable)

Negative tweets (Illustration credit: Abby McBride)Using the Twitter data from the 2009 H1N1 (swine flu) scare, researchers at Penn State University found that negative tweets about children’s vaccines were more likely to be shared than positive ones.  By collecting 318,397 tweets about positive, negative and neutral feelings toward the swine flu, the study more generally found that a high volume of both positive and negative tweets seemed to be contagious, both encouraging users to tweet more negatively.

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