A deadly bacteria is creeping up the US east coast. How worried should we be?

Warming ocean waters are priming beaches and raw shellfish for Vibrio even as scientists are trying to stay one step aheadBailey Magers and Sunil Kumar cut strange figures on Pensacola Beach. Bags of disinfectant solution surrounded them on the white sand; their gloved hands juggled test tubes while layers of rubber and plastic shielded their skin from the elements. As the two organized their seawater samples on the popular Florida shoreline last August, an older woman wearing a swimsuit walked...