Joyce Mack, 60, says ever since contracting Legionnaires' disease, she feels trapped in her apartment by a heavy machine that helps her breathe and in her mind by the fear of losing her life. "I watch TV all night. I will not go to sleep," she said. "I'm scared if I go to sleep, I might not wake up."

A fifth person has died as a result of the Legionnaires’ disease outbreak in Harlem, which has sickened more than 100, health officials said.