Earlier quoted context omitted.
Whatever the cause, it has to be something extremely subtle and very unlikely to occur. We know that from the simple numbers. Tens of millions of people vaping on an hourly basis for years amounting to ~500 cases means that whatever is occurring is a freak occurrence and not some direct consequence that has a high likelihood of occurring in typical people.
> Tens of millions of people vaping on an hourly basis for years amounting to ~500 cases Vaping is new. Maybe these are the early incidents of a yet-to-be-discovered chronic condition that takes a decade plus of vaping to develop. Hey, millions of high schoolers smoke cigarettes and none of them have lung cancer! (yet)
Juul Lab's and all the vaping shops need to be put out of business for claiming this is a harmless way of smoking. Kids took that and ran with it as they vaporize God knows what to get high in a stealthy and supposedly, more healthy way.