A Dexter man who admitted to exposing as many as 300 people to HIV has pleaded guilty. David L. Mangum entered the plea of guilty to two counts of recklessly risking infection of another person of HIV on Tuesday at the Butler County Courthouse. Stoddard County Prosecutor Russ Oliver said the state offered the plea after two witnesses decided not to testify against Mangum, reducing the number of counts from an original seven. During the investigation, Dexter Police Detective Cory Mills interviewed alleged victims from Stoddard, Dunklin and other surrounding counties. When Mills asked why he had not disclosed his positive test to sexual partners, Mangum replied: “Fear of rejection.” In November 2013, Mangum requested a change of venue and judge. The case was assigned to Butler County, and Judge Michael Martin Pritchett was assigned to hear the case. After having gone through several defense attorneys, Mangum was represented Tuesday by Erica Fox. Mangum is scheduled to have his sentencing hearing July 21 in Poplar Bluff.