This Virus Expansion adds to the worker placement game Cytosis: A Cell Biology Game and tests players’ resilience by exposing them to Ebola, Influenza, and Rhinovirus strain outbreaks! Players must choose between spending valuable ATP to gain health points or increasing their antibodies to immunize themselves against inevitable infections. Some viruses break out regularly; others can only be activated by players. Neglect your antibodies, and you risk succumbing to a virus. Neglect your health, and an opponent wins.