Moderate mutation, steady growth. A reliable baseline.
Highly unstable. Spreads rapidly but mutations are unpredictable.
Durable and resistant to climate. Slower initial spread.
Masters of stealth. Low detection rate for long-term infection.
Reanimates the dead. Traditional cures won't work.
Thirst for blood. Targeted predation.
Historical potency. Lethal and terrifying.
All humanity has been eradicated.