Maybe you're just a hypochondriac. Maybe your immune system is lazy, shrugging indifferently when bacteria run wild through your bloodstream. In effect, you are extremely susceptible to even the most pathetic pathogen. You take a −4 penalty to Vitality rolls for resisting any type of disease or illness. After a while, your allies will probably get tired of the "but I'm sick!" excuse. On the bright side, at least transplants are easy for you, as your body calmly and unconditionally accepts implants, transplants, symbiotes, and transfusions.