Ilinois has joined Wisconsin in reporting teens developing severe breathing problems after vaping.
Three teens were hospitalized in Illinois.
Wisconsin now has 11 confirmed and seven suspected cases of vaping-related lung disease. Some had to be put on respirators.
Health experts suspect the problem is more widespread than currently known.
State officials urge any health care provider who has patients with unexpected serious lung illnesses to ask about recent vaping.
Illinois reports 3 teens with severe breathing problems after vaping