Adapting Allegheny Uprising to my Campaign

[Enfield]

As some of you know, my campaign setting is a biological disaster, based roughly on a combination of 28 Days Later/Crossed Comic Series/the Crazies. I'm still running Allegheny Uprising, but my party headed out of Fort Detrick instead. I also adjusted White to being more of a somewhat rogue National Guard commander rather than an outright marauder.

Anyway, the party have managed to trick their way past the enclave at Munroeville, and are heading south now.

What I'm working on Route 119, New Stanton, Greensburg, Connellsville, Uniontown for encounters and adapting them to the other circumstances. So I would appreciate some brainstorming of ideas to make it work more with the basis for my game.