Created: 04/04/2014 11:00 AM
By: Erika Edwards, NBC News
(NBC News) -- An increasing number of people are being injured after coming into contact with e-cigarettes.
The problem occurs when people touch or accidentally swallow the liquid nicotine found inside e-cigarettes.
"People do not appreciate the level of toxicity that is present in this e-liquid. This is concentrated nicotine," says Dr. Tim McAfee of the Centers For Disease Control.
As sales of e-cigarettes have risen in recent years so have calls to poison control centers related to that concentrated nicotine, or e-juice as it's sometimes called.
The CDC has released a report finding just one call to a poison center related to e-cigarettes in September 2010. In February 2014 there were 215.
Read more: NBC News