Over 450 possible cases of lung illness associated with the use of e-cigarette have been reported in 33 states. 

US health officials urge people to stop vaping as five deaths linked to e-cigs

E-cigarette maker Juul Labs, based in San Francisco, is working on a plan to regulate but not ban e-cigarette sales.

San Francisco becomes first major US city to ban e-cigarette sales

An NHS trust in England has lifted its blanket ban on e-cigarettes on-site after a health regulator suggested they are safer than tobacco.