Infected people are red. The healthy people are blue. Recovered people are yellow. The doctor is purple. Move the sliders to your desired rates. Also, there is a .0005% chance that recovered patients will become doctors, and a .0015% chance for them to reproduce. There is a 5% chance for doctors to die on while attempting to cure patients. There is also a 1% chance for a turtle to die for some other reason. Click "next virus??" to get a .5 percent chance for another epidemic to start (from each turtle), which can then infect people who recovered from the previous one. People who haven't been affected by the new epidemic are blue, purple, yellow, or red. People who have recovered from this virus are white. Turtles with the new virus are black.