The Centers for Disease Control and Prevention on Wednesday said 16 states have reported 153 cases of serious respiratory illnesses in people who vape.
Most of the patients said they had difficulty breathing and experienced chest pain before going to the hospital, and several also said they used products containing THC, the chemical in marijuana that makes a person high. Officials are trying to get to the bottom of what exactly is causing the illnesses, and are now trying to determine which products were used. Doctors say it will be difficult to track the illness, because it is not mandatory to report vaping-related lung disease.
The cases were reported from June 28 to Aug. 20, with mostly teenagers and young adults affected. The CDC said it has not received any reports of death linked to the illness.