Idenix Pharmaceuticals, Inc. To Present At Biotechnology Industry Organization (BIO) CEO & Investor Conference And 2006 Citigroup Healthcare Conference

CAMBRIDGE, Mass., Feb. 8 /PRNewswire-FirstCall/ -- Idenix Pharmaceuticals, Inc. announced today that Jean-Pierre Sommadossi, Ph.D., Idenix's chairman and chief executive officer, will present a corporate overview at the upcoming BIO CEO & Investor Conference on Wednesday, February 15, 2006 at 12:00 p.m. at the Waldorf Astoria, New York and at the 2006 Citigroup Healthcare Conference on Tuesday, February 28, 2006 at 3:05 p.m. at the Mayflower Hotel, Washington, D.C.

The live and archived webcasts of the presentations can be accessed under "Calendar of Events" in the Idenix Investor Center at http://www.idenix.com. The archived replays will be available on the Idenix website for two weeks following the presentations.

About Idenix

Idenix Pharmaceuticals, Inc. is a biopharmaceutical company engaged in the discovery and development of drugs for the treatment of human viral and other infectious diseases. Idenix's current focus is on the treatment of infections caused by hepatitis B virus, hepatitis C virus and human immunodeficiency virus (HIV). Idenix's headquarters are located in Cambridge, Massachusetts and it has drug discovery operations in Montpellier, France and Cagliari, Italy.

Contacts: Idenix Pharmaceuticals, Inc. Amy Sullivan (617) 995-9838 Teri Dahlman (617) 995-9905

Idenix Pharmaceuticals, Inc.

CONTACT: Amy Sullivan, +1-617-995-9838, or Teri Dahlman, +1-617-995-9905,both of Idenix Pharmaceuticals, Inc.

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