Vaping lung injury symptoms have been reported online for at least seven years

A team of researchers at the University of California, Riverside, used automated computer methods to mine a large online discussion forum for electronic cigarette users and found this group reported numerous adverse health effects for at least seven years.

source https://www.lifetechnology.com/blogs/life-technology-medical-news/vaping-lung-injury-symptoms-have-been-reported-online-for-at-least-seven-years