PHILADELPHIA, Dec. 4, 2008 (GLOBE NEWSWIRE) -- Hemispherx Biopharma, Inc. (NYSE Alternext US:HEB) announced the appointment of a new Chief Financial Officer (interim), Charles T. Bernhardt, C.P.A, M.B.A., effective January 1, 2009. Robert E. Peterson, Hemispherx's Chief Financial Officer for approximately 20 years, is retiring at that time; he will retain a position of Consultant and Financial Advisor to the Company.