Dyer & Berens LLP today announced that it has filed a class action lawsuit in the United States District Court for the Eastern District of Pennsylvania, Civil Action No. 09-cv-5262, on behalf of all purchasers of the securities of Hemispherx Biopharma, Inc. between February 18, 2009 and October 30, 2009 (the "Class Period"), for violations of the federal Securities Exchange Act of 1934.
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