AUSTIN, Texas--(BUSINESS WIRE)--Fitch Ratings has assigned its 'AAA' rating to the following limited tax bonds of Harris County, TX: --$193.4 million permanent improvement and refunding bonds, series 2015A. The bonds are scheduled to sell via negotiation during the week of July 27. Bond proceeds will be used to construct a forensics facility and refund outstanding commercial paper notes. The Rating Outlook is Stable. SECURITY The limited tax bonds are payable from an annual property tax levy, l