Update: No new cases of bloodstream infection reported in Wisconsin

MADISON — An outbreak of a bloodstream infection may be slowing in Wisconsin.

The Wisconsin Department of Health Services said Wednesday that no new cases of the bacteria known as Elizabethkingia have been reported in the state in the last week.

The number of confirmed infections increased to 57 after one of two cases under investigation a week ago was confirmed. The other case is still under investigation.

Eighteen people who have been diagnosed with the bloodstream infection have died in Wisconsin. State health officials say most are over 65 and have a serious underlying health condition.

The U.S. Centers for Disease Control and Prevention has been working with state officials to identify a source of the bacteria that began showing up in Wisconsin in November.