There were a number of comments to my last post related to Creep contamination and the risks of suffering mutation.
Exploring the surface is risky business in Tempora Mutantur (see my Grim New World post). Expedition Teams may encounter Creep contamination in the form of rad storms, soil contaminated by chemical weapons, pockets of toxic goo, strange diseases of Ancient origin, or any number of other sources.
If you are carrying a Geiger counter or rad tabs, you can never be quite sure whether they’ll be able to detect this particular form of Creep. And even if they do provide warning, it may already be too late.