PandemicSanofi-aventis is actively involved in preparing for a pandemic.

Phase 4.

PandemicSanofi-aventis is actively involved in preparing for a pandemic , and has invested in a major expansion of production of influenza vaccines. Every daysteur is committed to continue its robust research and development program by exploring strategies for protecting more people.

These risks and uncertainties include, but are identified in the public filings with the SEC and the AMF made by sanofi-aventis, including those listed under Risk Factors listed and Cautionary Statement Regarding Forward – Looking Statements in the Annual Report of sanofi-aventis on Form 20 – F for the year ended 31 December 2008. Other than prescribed by applicable law, sanofi-aventis does not undertake to update or revise any forward-looking information or statements.. Sanofi Pasteur, the vaccines division of sanofi-aventis Group, provided more than 1.6 billion doses of vaccine in 2008, making it possible to immunize more than 500 million people around the world. As the world leader in the vaccine industry, Sanofi Pasteur offers the broadest range of vaccines protecting against 20 infectious diseases.IPS patient work to most 4 times as for many hours through the 18 – month follow up period. Of those who worked, were the duration of the longest kept job twice as long to to the IPS patients for the professional patient reports .

Satisfaction with personal or in the vicinity security had been a similar impact on duration of employment, with whom should be less safe sense to hold more probable in order to work for longer.