AEterna Zentaris to Announce Fourth Quarter and Full-Year 2007 Financial and Operating Results on March 5, 2008

QUEBEC CITY, Feb. 28 /PRNewswire-FirstCall/ - Aeterna Zentaris Inc. , a global biopharmaceutical company focused on endocrine therapy and oncology, will announce its fourth quarter and full-year 2007 financial and operating results before market open on Wednesday, March 5, 2008. The Company will host a conference call and webcast to discuss these results later that same day at 10:00 a.m., Eastern Time.

Participants may access the live webcast via the Company’s website at www.aezsinc.com in the “Investors” section, or by telephone using the following numbers: 416-644-3425, 514-807-8791 or 800-595-8550. A replay of the webcast will also be available on the Company’s website for a period of 30 days.

About Aeterna Zentaris Inc.

Aeterna Zentaris Inc. is global biopharmaceutical company focused on endocrine therapy and oncology with proven expertise in drug discovery, development and commercialization. News releases and additional information are available at www.aezsinc.com.

CONTACT: Jenene Thomas, Senior Director, Investor Relations & Corporate
Communications, (908) 626-5509, jthomas@aezsinc.com; Paul Burroughs, Media
Relations, (418) 652-8525 ext. 406, pburroughs@aezsinc.com

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