Infectious

Oh no!  A zombie bite!  It’s too late to head to the Winchester and wait for this thing to all blow over now.  Fight off the zombie bacteria, protect your red blood cells, and avoid becoming one of the shambling, mindless, hungry masses.

Use the energy provided by your metabolism to deploy white blood cells armed with antibodies to seek and destroy the zombie bacteria.  When a white blood cell successfully destroys a zombie bacterium, it becomes a more effective defender of your red blood cells.  Watch out! The zombie bacteria can adapt, too!  As they kill your white blood cells, they become more resistant to the attacks of your white blood cells.  Defeat the zombie bacteria and heal the wound before all your red blood cells become infected.