- Whatever the sickness is, Rousseau believed that she had to kill her entire science team once they had the sickness
- Desmond inoculated himself in the hatch from vials that had “The Numbers” written on the side
- The door of “the hatch” had the word “quarantine” written facing the outside (as if the rest of the island was quarantined);
- Desmond, upon meeting the survivors of Flight 815 asked if any of them were “sick”