CHIR Chiron (MM)

Chiron Corporation (Nasdaq:CHIR) today announced that it will hold an investor conference call on Monday, October 17, at 4:30 p.m. EDT to discuss the return of its FLUVIRIN(R) influenza virus vaccine to the U.S. market and the company's influenza vaccines business outlook. To access either the live conference call webcast or the replay, please log on to www.chiron.com/webcast. Please connect to the website at least 15 minutes prior to the conference call to ensure adequate time to download any necessary software. Webcast replay will be available for one year after the completion of the call. Alternatively, to access the live conference call by phone, please call (800) 819-7026 from the United States or Canada or (706) 643-7768 from other locations. Telephone replay is available approximately two hours after the completion of the call through 11:55 p.m. EDT, Monday, October 24, 2005. To access the replay, please call (800) 642-1687 from the United States or Canada or (706) 645-9291 from other locations. The conference ID number is 1407884. About Chiron Chiron delivers innovative and valuable products to protect human health by advancing pioneering science across the landscape of biotechnology. The company works to deliver on the limitless promise of science and make a positive difference in people's lives. For more information, please visit www.chiron.com.