Instructions
Click on the drill when you see a green miasma forming underneath your patient's skin. This is your cue that the patient is infected and needs an injection.
Push the pixie dust button to combine the drill and pixie dust together.
Inject the pixie dust into the infected area. A small circle appears with a red square inside of it. Hold down your left mouse button and follow the red square.
Release the left mouse button once you've made a complete circuit around the circle.