The scary part is how many people I see at work that are still coming in to work with mild cold and flu symptoms. Drs won't even test them unless it becomes more serious but what's to say its not just a mild case and they are walking around spreading it. That could be part of the reason it spreads so readily because half the carriers may not even realise they have it
There is a LOT of people with cold and flu right now which seems a little early for the regular flu season to me.
I just practice my own caution. I normally help all the boys on site with Concreting etc. Not anymore fuck em. I sit in my excavator with the doors shut