evidence: An HIV "epidemic" fueled by needle-sharing opiate addicts has infected at least 72 people in one southern Indiana county as Gov. Mike Pence plans to declare a public health emergency in that community on Thursday. The outbreak's swift acceleration in Scott County — beginning with seven known HIV-positive patients in late January — has prompted state officials to ask the Centers for Disease Control and Prevention to deploy investigators to test residents and to help control further spread of the virus, Pence said. [...] Related: Report: Prescription drug abuse linked to HIV outbreak in Indiana