Marvel: Disease Immunity

Cain Marko (Juggernaut)
Juggernaut is also immune to all toxins, poisons, and diseases.

Gabriel Shepherd (Shepherd)
Shepherd was seemingly immune to the plague as were all Proto-Mutants.

Laura Kinney (X-23)
Due to her highly efficient immune system, X-23 is immune to all Earthly diseases and infections.

Raven Darkholme (Mystique)
Mystique is able to develop resistances and immunities to toxins and diseases.

Victor Creed (Sabretooth)
Sabretooth's healing powers also extend to his highly efficient immune system. As a result, he is immune to the effects of all known Earthly diseases and infections.

Wade Wilson (Deadpool)
The unique regenerative qualities of Deadpool's healing factor also extends to his immune system, rendering him immune to the effects of all known diseases and infections.