As far as I understand you get these diseases from infected feeders, but in over 100 hours playtime, mainly in challenge mode on jurassic difficultly. I've never once come across them. The only times I've got an infected feeder (about twice the entire game) have both been Salmonella.
Any advice/tips on how to get these two and which dinosaurs are best to use/most suspectible?
Any advice/tips on how to get these two and which dinosaurs are best to use/most suspectible?