I suggest that y'all read the book "The Great Influenza", by John M. Barry. It goes into great detail on the "Spanish flu" that occurred in the early 1900's. It tells what people did wrong, and what they did right.
Also understand that modern medicine in leaps and bounds ahead of what it was back then. The key is going to be preventing exposure, I.E. staying home. Yes I know, that eventually you have to go around the public. That's going to mean you need some sort of breathing protection, and just as importantly a way to decontaminate before you go back into your house.
One of the main ways people in rural areas were infected was by the U.S. Mail.
Again good book, well worth a read.