CRUCELL/US NAVY SIGN PACT TO TEST ADVAC-BASED VACCINE.

Dutch biotechnology company Crucell N.V. (Euronext, NASDAQ: CRXL), Leiden, The Netherlands, has signed a Cooperative Research and Development Agreement (CRADA) with the Naval Medical Research Center of the US Navy to construct AdVac-based vaccines against anthrax and plague and test them in non-human primates.

Like Ebola and Marburg, anthrax and plague are among the so-called 'Category A' agents, which are considered by the Centers for Disease Control and Prevention (CDC) and the World Health Organization (WHO) to pose a significant risk in the event of use as bioterrorist agents. Category A agents can be easily disseminated or transmitted from person-to-person, result in high rates of mortality, may cause public panic and require special action for public health preparedness.

Crucell is already in the course of developing an Ebola vaccine with the Vaccine Research Center (VRC) of the US National Institutes of Health and the US Army Medical Research Institute for Infectious Diseases (USAMRIID), utilizing adenovirus vector technology and PER.C6 production technology. The same technology will be used for the collaboration with the US Navy on anthrax and plague. Under the terms of the CRADA, Crucell has obtained an option on exclusive commercialization rights to any vaccine that could result from the collaboration.

"This program builds directly on our experience with the AdVac and PER.C6 technologies utilized in the HIV programs with Merck, IAVI and Harvard, our malaria program with NIH and the US Army and the TB program with Aeras," said Crucell's chief scientific officer, Dr. Jaap Goudsmit. "The primate studies are modeled after the Ebola studies we have conducted with the VRC and USAMRIID. We are very proud that AdVac technology is gaining wider acceptance as a system for population-wide vaccination in the area of biodefense."

About Crucell

Crucell N.V. is a biotechnology company focused on developing vaccines and antibodies that prevent and treat infectious diseases, including Ebola, influenza, malaria, West Nile virus and rabies. The company's development programs include collaborations with: sanofi pasteur for influenza vaccines; the U.S. National Institutes of Health for Ebola and malaria vaccines; and GlaxoSmithKline (GSK), Walter Reed Army Institute of Research and New York University for a malaria vaccine. Crucell's products are based on its PER.C6 production technology. The company also licenses its PER.C6 technology to the biopharmaceutical industry. Licensees and partners include DSM Biologics, GSK, Centocor/J&J and Merck & Co., Inc. Crucell is headquartered in Leiden, The Netherlands, and is listed on the Euronext and NASDAQ stock exchanges (ticker symbol CRXL).

For more information, visit http://www.crucell.com or call 212/926-1733.