They are not calling the Corona virus a form of influenza. However, this is something I read several years ago concerning the flu. When you have the flu, you don't show any symptoms. When your body recognizes that something is wrong it starts to fight the disease and that's when the symptoms show up. You know, the puking, the chills, the fevers, the body aches and pains, the weakness, etc. blah, blah, blah. Well its too late for your friends because you probably passed it along to them before your symptoms became bad. It appears that this virus is acting the same way as the flu virus. I suggest you carry hand sanitizer at all times and use it anytime you touch anything. If it gets bad here in the US, I also suggest the higher quality face masks.