I would still worry about turning over plots of dirt in Europe for fear of re-exposing the Plaque.
And NASA brought back parts of an unmanned Lunar probe. They were contaminated with staph (decom at the mfg plant wasn't
that great). That bacteria was brought back to life after spending several years exposed, on the Moon.
I don't think I'd sweat the plague so much as unexploded munitions.
And unwashed, or uncooked veggies.