PHILADELPHIA--(BUSINESS WIRE)--April 11, 2006--Hemispherx Biopharma, Inc. ("Hemispherx" or the "Company") (AMEX: HEB - News) will hold a telephone conference call at 10:00 a.m. ET on Thursday, April 13, 2006 to review the Company's accomplishments, update on influenza related studies and outline future goals.