1.
In this level, you will try to find a virus that infects at least one subject, causes a symptom, and lasts at least 1 day.
2.
Now click the "Test virus" button to see the virulence, effects, and duration of the virus.
3.
Looks like you didn't infect anyone. Try picking another virus.
Your goal: Try to find a virus that infects at least one subject, causes a symptom, and lasts at least 1 day. Start by picking a virus from the left.
Click on a subject on the right scrollbox to see a close-up.
Roll over a red square or blotches on a face in order to zoom in.
Instructions