Plague Inc. Wiki
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Plague Inc. Wiki

Blood Sacrifice 1 is a symptom exclusive to the Shadow Plague DLC that requires the symptom Shadow Slaves and the ability Lair before it is unlocked. It causes the infected to bleed themselves in order to strengthen their vampire masters.

Trivia

  • It is similar to the Simian Flu ability Education, as both can help the player in getting more DNA from a colony/lair.
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