Caitlyn's eyes thinned as she places her wrist on Jack's forehead as he slumps from the fever. "Okay, what do we know? He went out into the planet with us taking in that hallucinogenic air. Then you get attacked by some sort of dog type thing, and we come back here and play a little. Then we head to the library. Did he ingest anything that could have caused this? Or is it something to do with his genetics?" She asked looking at the Doctor hoping he had the answer of what was wrong.
Rose shook her head. "Not the time to ask, cousin. Let us get 'im to a room first and laying down." She suggested not knowing what was wrong with Jack neither but they had to think logically.