Behind the county hospital's tall cinderblock walls, a 27-year-old tuberculosis patient ... sits in a jail cell equipped with a ventilation system that keeps germs from escaping. Robert Daniels has been locked up indefinitely, perhaps for the rest of his life, since last July. But he has not been charged with a crime. Instead, he suffers from an extensively drug-resistant strain of tuberculosis. It is considered virtually untreatable. County health authorities obtained a court order to lock him up as a danger to the public because ... he did not heed doctors' instructions to wear a mask in public. I'm being treated worse than an inmate," Daniels said. "I'm all alone. Four walls. Even the door to my room has been locked. I haven't seen my reflection in months." He said sheriff's deputies will not let him take a shower -- he cleans himself with wet wipes -- and have taken away his television, radio, personal phone and computer. His only visitors are masked medical staff members who come in to give him his medication. Though Daniels' confinement is extremely rare, health experts say it is a situation that U.S. public health officials may have to confront more and more because of the spread of drug-resistant TB and the emergence of diseases such as SARS and avian flu.