This New York Times article attempts to cut through the headlines and use a simple concept called the “epidemic triangle.” Employed by epidemiologists since the discipline’s earliest days, it is indispensable in predicting whether localized outbreaks will transform into full-blown epidemics.

A man is in isolation at Providence Regional Medical Center in Everett, Washington after returning home to Washington state after a trip to Wuhan China on Jan. 15, 2020. This is the first case in the U.S. of an infection with a new coronavirus, named 2019-nCoV, which causes respiratory symptoms like pneumonia. Cases have also… Read more »