DATA: Looking at norovirus outbreaks in Arizona

Some may call it food poisoning, stomach flu, or a stomach bug, but it mostly comes down to norovirus. It is a leading cause of foodborne illnesses. The Centers for Disease Control and Prevention (CDC) tracks the virus, and there is a small uptick in the data. At the summary level the CDC estimates anywhere from 19 to 21 million Americans contract norovirus each year.