A new CDC study finds a dramatic increase in e-cigarette-related calls to poison centers.

The number of calls to poison centers involving e-cigarette liquids containing nicotine rose from one per month in September 2010 to 215 per month in February 2014, according to a CDC study published in a recent Morbidity and Mortality Weekly Report.

The number of calls per month involving conventional cigarettes did not show a similar increase during the same time period.

More than half (51.1 percent) of the calls to poison centers due to e-cigarettes involved young children under age five, and about 42 percent of the poison calls involved people age 20 and older.

This report raises another red flag about e-cigarettes: the liquid nicotine used in e-cigarettes can be hazardous.

Special guest, Dr. Michele Burns, provides the latest information on these e-cigarette liquids, as well as how to best protect your children from harm.