MADISON, Wis. (AP) -- Dane County health officials are dealing with an outbreak of bacterial infection.

Eighteen cases of Shigellosis have been reported in the county since Sept. 20. That's one fewer case than all of last year.

The bacterial infection is associated with consuming water or food contaminated with fecal matter. Most of the Dane County cases are in children and young adults. Only one person sickened has been older than 40.

The disease can cause fever, stomach cramps and diarrhea. The Wisconsin State Journal reports health officials are advising people to wash their hands and stay home if they are ill.