I meant to say 1/100th of 1% of the population. We may even be less than 1/1000th of 1%...
Anyway, my point is this: While there may be an attempt at mass exodus of highly populated areas, people will run out of gas and just sit there waiting for help to come. There will be people who will take advantage of the weak. If the exodus is illness, the sick may die on the road.
How many people can walk out of a city and reach safety? A very small number. So I think those of us who do know what we are doing have a better chance at reaching isolation in the countryside. Once we've reached our destinations, we'll probably have to either defend it or figure out who we're going to let in with us.
The more people that survive and are community minded, the better for us all, though.