This module simulates the spread of a disease. the disease transmits by 4 red turtle. Where healthy blue turtles collide with the red, they carry the disease, while when they collide with the yellow turtle (vaccinated) they won't get infected.
I added a new agent called (New vaccine). When the red infected turtles collide with it they recover and turn into yellow. I also add the camera to the New Vaccine Agent, and add data box to count the red, blue, and yellow turtles. Additionally, I toggled off forever when the count of red equals zero.