People are searching for “winter vomiting disease” and “winter vomiting virus” — here’s what you actually need to know. It’s norovirus, the highly contagious stomach bug that spreads fast in winter and causes vomiting, diarrhea, nausea, and stomach pain. Cases are already rising across the U.S., and outbreaks are being reported in schools and on cruise ships. Washing your hands with soap and water, cleaning surfaces, and staying home when you’re sick can help stop the spread. You’re still contag