★ 5.4
★ 3.0
★ 4.3
★ 5.9
★ 3.3
★ 6.9
★ 6.4
★ 4.0
★ 4.8
★ 6.2
★ 5.2
★ 5.5
★ 6.6
★ 7.2
★ 6.0
A medical breakthrough causes a zombie outbreak when it mutates within certain individuals in the trial injections.
