tim49424
Engineer
The worry that you become a carrier is real. If I was even indirectly exposed would probably not get around those who are immune compromised.
That is the real tricky part....how does one know they’re a carrier? We, as a society (in AU members cases, a train riding society) should consider everyone to be a carrier...let sensible paranoia prevail and stay away from those you speak of. For those who are in that aforementioned group, this is not the time to experience train travel.