This is for Vector D, A or G only. S vectors don't spread this way.
Virulence Group: 1-4 (per disease page)
Cycle Time: (see diseases)
Victim Pool: Total people in a population.
Initially Exposed: The first people infected. The more initially exposed the more likely it will spread.
Doctor BCS: Doctors greatly reduce the spread. The higher the BCS the better.
Quarantine: How soon is the infection discovered and do they properly quarantine the infected?
Doctor Pathologist: A pathologist will greatly reduce spread.