Health officials are warning people to stop using e-cigarettes, as the number of illnesses related to them continues to rise in the United States.
The health officials said that they know about 450 cases across 33 states of illnesses possibly related to e-cigarettes. That is more than double the number of cases reported two weeks ago. The number of deaths due to lung injury has also increased to five cases since August this year.
The officials said that it is too early to say what exact chemical in the e-cigarettes is causing the problems because some patients reported smoking both e-cigarettes and marijuana. Some reported using nicotine only.
The officials advise e-cigarette users not to buy e-cigarettes in the streets, as well as not to add any substances that are not intended by the manufacturer.