Ending 2

 The people tested the medicine on the zombies and it actually worked. So the people was happy.The people where all celebrating , but Einstein was not. Einstein was still working on the medicine. That is  because he figured out that the virus zombie can come to the world again , and that is because his medicine did not work very good. So he tried to figure out another medicine , but he could not. So he wonders  , what will happen to the world ?