Undeads are everywhere!

Sci-Fi Earth, year is 2070. Everything started 15 years ago. One physician, who has worked at the nuclear power station in Chicago, decided to try canned bat brains, he liked to eat exotic food. His 16 y.o. daughter Amelia, maths genius (learned applied one for nuclear engineers), and fluent Russian and Ukrainian speaker (she has found out her great grandmother was from former USSR, Chernobyl), made an examination of these canned brains in the school lab. The food her father liked ended up to contain high concentration of nuclear parts. David Thornton, this physician, felt more and more hungry after each consumed can of bat brains. And one day he went home so hungry he's bitten his daughter's arm. Amelia was terrified when she saw her father was staring at her with his unhealthy gaze, and tried to defend herself. But father was stronger. Amelia has read books about zombie apocalypse before, so she knew what she was to do. Defend her brain from damaging, to stay self aware even after half death. And she started solving complex math equations, despite the pain. After turning into intelligent zombie, Amelia disarmed her father, who managed to bite his wife and father by that time, with newly gained strength, and called 911. Military officers came, tied David Thornton firmly, and took with themselves.