I wouldnt want to be the one that runs into the woods, what happens if you get ill? you gonna run back out to the city by yourself and try to jack the antibiotics from me??? You gotta realize the value of possesions would change drastically. Weapons would hold the most value as they would be the law and your best friend. Antibiotics would be second being that nobody would be seeing doctors anymore and anyone killed would be left to rot where they died, animals would feed on these rotted infected bodies spreading infections everywhere eventually to the animals in your wooden haven.