2.3% of US population reports current e cigarette use More than 100 million people around the world now use e cigarettes, including at least 15 million children, according to the World Health Organization (WHO). The organisation has warned that vaping is fuelling Percentage of E cigarette Vape Users in Several Countries Around the Download Scientific Diagram E cigarettes: Facts, stats and regulations WHO urge banning of e cigarettes from public places Daily Mail Online Ban 'toxic' e cigarettes indoors due to passive vaping threat, says World Health Organisation