By the time they got to the Hospital Wing, Harry was already being examined by a bewildered Madame Pomfrey.
She ordered Professor Slughorn to find out what poison was used, and he took the bottle, and ran off to his office.
Hermione, Ginny, and Ron were sitting on the nearest bed to Harry Madame Pomfrey would allow, watching him getting paler and his pupils larger.
Suddenly, his whole body went rigid, and his back arched so much, that he was more or less sitting up. Ron yelled for Madame Pomfrey, as he started to shake even more.
When Ginny tried to gently lay him down again, she yelped as her hands touched his body, which was so hot, her hands felt burnt.
Madame Pomfrey was hurriedly getting various potions to send him to sleep, when he stopped shaking, and fell onto the bed, with his eyes open and glazed over.
Hermione quickly checked his pulse, but couldn't find one…