Preventing the disease!
The bacteria based STD.
Stage two- Rashes form on the feet and hands along with flu like symptoms. Hair loss may also occurred the virus attacks the bodies organs. (If not treated by the end of stage two, death may occur.)
Stage three- Detected only in blood. The bacteria is working internally to kill you.
Stage four- Maybe years after stage two is over. Can cause death, heart disease, blindness and insanity.