City knew of youth baseball field contamination a year ago but didn’t tell residents – Chicago Sun-Times*

"In fact, Brian Koch, of the Division of Environmental Health, said in the letter that...players and spectators can minimize exposure by 'cleaning clothing and equipment of dust or loose dirt prior to leaving the field” and washing hands after playing. The letter also suggested removing shoes when going inside homes, using door mats and vacuuming frequently. And Koch recommended eating a balanced diet with vitamins and minerals.'"