As being in NYC, I have felt ill myself recently and while I wasn’t in China or near anyone regularly from affected areas, the virus and bacteria on mass transit is still always in my mind. New airplanes have powerful HEPA filtration systems and I don’t know what filtration systems subways and bus have or other trains and the like. Amtrak’s cars are old and so its unlikely they would have modern systems until the trains are replaced. Transportation systems should have advanced filtration system across the board especially as new viruses constantly emerge. I am not saying people should avoid mass transit but the system can have advanced filtration systems to prevent outbreaks which could be phased in. Mass transit and areas with lots of people can spread bacteria and viruses really fast.