I don't think there is any proof that healthy young people are not at risk. The first case in NJ was a 32-year-old physician who had attended a training session in a hotel in Manhattan. The doctor who first sounded the alarm in China was in his 30s--and he died. It's wishful thinking that this only seriously affects the elderly--though the fatality rate seems to increase with age, I don't see any evidence that young people have nothing to worry about. I've been reading Twitter feeds from Italy, and that situation is beyond alarming. The hospitals are overwhelmed with serious cases. The US is behind on the infection rate, but may well catch up rapidly. That's why colleges and companies here are starting to have everyone work or study from home. Which may be the best way to mitigate, as they say, the situation with rapid spread of the virus. Some people seem to be not paying much attention to what is really going on--in denial, most likely. The messages from Italy are urging us to start paying serious attention now--not when it reaches catastrophic proportions. And to not pursue life as usual. I've decided to work from home starting tomorrow (fortunately, I can) and basically stay home except for trips to buy food or pharmaceuticals, etc. No movies, theater, exercise classes, and probably no restaurants. It's just not worth it at this point. I can only hope I'm overreacting, but I think this makes sense, at least for awhile until we see what develops.