MILWAUKEE (WTAQ) - Wisconsin health officials say eight people in Metro Milwaukee are among those who got sick from a salmonella outbreak involving 90 people in 19 states.

As of Thursday morning, 5 cases have been confirmed in Waukesha County, and another 3 in Milwaukee County. 3 of the 8 victims were hospitalized.

The U.S. Food and Drug Administration and the Centers for Disease Control are trying to identify the source of the outbreak.

Officials say it might be related to sushi. And health investigators are zeroing in on spicy tuna rolls as the possible culprit.

Wisconsin officials say they’re monitoring other possible salmonella cases – and they’re helping the federal probe by interviewing victims about what they’ve eaten.