Health security

Researchers find mass killings and school shootings are contagious

Mass killings and school shootings in the U.S. appear to be contagious, according to a team of scientists from Arizona State University and Northeastern Illinois University.

Study author Sherry Towers, research professor in the ASU Simon A. Levin Mathematical, Computational and Modeling Sciences Center, explained, “The hallmark of contagion is observing patterns of many events that are bunched in time, rather than occurring randomly in time.”