Scientists are currently working on a vaccine that could prevent cocaine addicts from getting a high from the drug. The vaccine contains inactivated cocaine molecules that are attached to pieces of the inactivated cholera virus. When the vaccine is injected into the body, it trains the body’s immune system to see the drug as an invader. If the vaccinated cocaine addict takes cocaine, antibodies surround and attack themselves to the cocaine molecules and prevent them from reaching the brain to create that sense of feeling high. For people that want to stop using cocaine and kick the habit, the vaccine could be very useful.