In Illinois, there have been no deaths related to the cyclospora outbreak, the Illinois Department of Public Health reported Tuesday.

State and local health officials have still not identified a cause or source behind the higher number of cyclosporiasis cases the state and the city is seeing compared to previous years. The disease, which can cause frequent and watery diarrhea, is spread by consuming contaminated food or water.

An outbreak of a diarrhea-causing parasitic infection has hit more than half of U.S. states, including in Illinois, which has 194 confirmed and probable cases as of Monday.

Three new cases of measles have been confirmed in Cook County, health officials announced Monday. That brings the statewide total to nine infected people. Seven of the cases, including six small children, have been linked to a Palatine day care center.

A confirmed case of measles is reported in suburban Cook County. We have the details on what you need to know about preventing an outbreak.