Story highlights Two cases of measles confirmed at Chicago-area day care center

Three additional cases of measles diagnosed at the center, but not yet confirmed

Day care workers and children who haven't been vaccinated for measles sent home for 21 days

What's your message for parents who don't vaccinate their children? Share at CNN iReport.

(CNN) Parents at a Chicago-area day care center are keeping a close watch over their children for any signs of fever or rashes. They learned Wednesday that two infants who attend a KinderCare Learning Center in Palatine, Illinois, have tested positive for measles.

Three more cases have been diagnosed, based on clinical and other criteria, but results are pending, according to a statement from the Cook County Department of Public Health and state officials.

Officials say it is not clear whether these cases are linked to a previously confirmed case in suburban Cook County or to the outbreak associated with Disneyland in California.

In light of the ongoing debate over childhood vaccinations, agencies are taking extra precautions to limit the spread of the measles.

Everyone at the day care center was notified about the measles cases. Anyone who has not had the MMR (measles, mumps, rubella) vaccine was told to stay at home and away from others who have not been vaccinated for the next 21 days. Infected people are contagious from four days before their rash begins through four days afterward.

Read More