"All but Tosh" Gwen lets rip another round of hacking coughing. She was sore from both her flu and the crash landing but she somehow made it over to Jack, part of her so badly wanting to be warm. "Owen had the flu,before all this. Knocked flat for over 2 weeks" as she tried to explain.
Basically Gwen looks ready to keel over and feels as miserable as she looks.