Prisons Overdose Symptoms

In this Oct. 4, 2018, Pennsylvania Corrections Department mail inspector Brian Strawser sorts inmate mail at Camp Hill state prison in Camp Hill, Pa. Pennsylvania prison officials say new mail handling procedures and other changes appear to have helped address a spate of incidents this year in which correctional officers and other staff have sought medical treatment believed to be caused by exposure to synthetic marijuana that was smuggled into state prisons. (AP Photo/Mark Scolforo)