It starts suddenly: When a stomach bug strikes out of nowhere, noroviruses are often the culprits. Here, we answer the most important questions about this unpleasant virus. How is norovirus ...

Over-the-counter (OTC) drugs are typically considered safe when taken at the recommended doses. But take the right amount for a little too long, and you could run into some unexpected side effects.

After years of largely predictable norovirus waves, the emergence of a new strain might have disrupted the seasonal pattern of outbreaks from this notorious stomach bug, suggests a new report by the ...