Alabama health officials confirm that the state's prison system is dealing with its worst outbreak of tuberculosis in five years. Officials say they've already treated nine active cases of the respiratory disease in state prisons this year. According to state health officials, four of the five cases this year occurred at the St. Clair Correctional Facility. The other case occurred at Donaldson prison, north of Birmingham. The state director of tuberculosis control, Pam Barrett says due to the outbreak, St. Clair Correctional Facility isn't allowing any new inmates, or transferring any to other facilities. In separate cases, health officials say they've identified active TB in a worker at the Mercedes-Benz plant in Vance and a student at Auburn University.