Chiron Foundation Awards Four Grants to Aid New Approaches in Medical Research and Health Policy

The Chiron Foundation, a nonprofit philanthropic
organization funded by Chiron Corporation (NASDAQ:CHIR), announced
today that it has awarded a total of $90,000 to four organizations
whose programs are accelerating the discovery of novel therapies and
furthering the use of science and technology in healthcare. The
recipients are the American Society of Transplantation, the Alliance
for the Prudent Use of Antibiotics, the Myelin Repair Foundation and
the National Academy of Sciences. 
   "The work of these organizations contributes to the advancement of
public health policies affecting healthcare around the world," said
Jay Grover, president of the Chiron Foundation. "These grants support
health policy initiatives that include educational outreach to
government policy makers as well as healthcare practitioners. By
supporting the efforts of these exceptional organizations, we extend
our dedication to improving the quality of human life."
   The Chiron Foundation's grant to the American Society of
Transplantation (AST), located in Mt. Laurel, NJ, will support an
important initiative to identify and describe disparities in access to
transplant healthcare services and in quality-of-life outcomes
associated with solid-organ transplants in minority populations. The
initiative will suggest actions that would address these issues and
could lead to improved access and outcomes. The AST, an organization
of more than 2,200 transplant professionals, aims to offer a forum for
the exchange of knowledge, scientific information and expertise in the
field of transplantation.
   The Chiron Foundation's grant to the Alliance for the Prudent Use
of Antibiotics (APUA), a nonprofit organization located in Boston,
will support the expanded dissemination of the 2005 GAARD (Global
Advisory on Antibiotic Resistance Data) Report, a landmark report
concerning global drug-resistance threats in the treatment of HIV,
tuberculosis, malaria, pneumonia, diarrheal diseases and gonorrhea.
The grant will see that the report reaches key medical professionals
and public health policy makers, including several hundred targeted
Congressional members. The APUA, founded in 1981, is the world's
leading organization dedicated to improving antimicrobial treatment
and containing antimicrobial resistance throughout the world. The
GAARD report comes from public/private collaboration among the World
Health Organization, the U.S. Centers for Disease Control and
Prevention, and pharmaceutical companies to collect and integrate
antimicrobial resistance data for special studies designed to inform
public policy.
   The Chiron Foundation's grant to the Myelin Repair Foundation
(MRF), a nonprofit research foundation located in Saratoga, Calif.,
will support the organization's collaborative research initiative to
find myelin repair treatments for people afflicted with multiple
sclerosis (MS). MRF is a consortium of scientific and business
professionals that was created to develop and demonstrate a new model
for bringing effective new treatments for neurological diseases to
market more quickly through a coordinated, interdisciplinary,
outcome-based approach to basic research. Through its strategically
defined process for collaboration, the MRF aims to substantially
shorten the time to translate basic academic research discoveries on
the mechanisms for myelin repair into improved clinical outcomes for
people with MS.
   The Chiron Foundation's grant to the National Academy of Sciences,
a private, nonprofit society of distinguished scholars, located in
Washington, D.C., will support the academy's review of intellectual
property policy concerning patenting and licensing genomic and protein
research. In particular, the grant will fund the development of a
survey to gather information from users and generators of such
intellectual property, from which the Academy will promulgate
guidelines intended to maximize the productivity of genomic and
protein research and the application of their results to the practice
of medicine. The academy, in its role as adviser to the nation on
science, technology and health, engages experts from industry, law and
academia to exchange views on health policy issues and contribute to
better public policies and practices. The organization is dedicated to
the furtherance of science and technology and to their use for the
general welfare.

   About the Chiron Foundation

   Established in 2004, the Chiron Foundation is an independent,
nonprofit organization committed to improving lives through better
healthcare, empowering lives through better education and enriching
lives through better communities. The foundation awards grants in
three major focus areas: health and medicine, education, and
community. For further information about the Chiron Foundation, please
visit www.chiron.com/foundation.

   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 about Chiron, please visit www.chiron.com.

   This news release contains forward-looking statements that involve
risks and uncertainties and are subject to change. A full discussion
of the company's operations and financial condition, including factors
that may affect its business and future prospects, is contained in
documents the company has filed with the SEC, including the form 10-K
for the year ended December 31, 2004, and will be contained in all
subsequent periodic filings made with the SEC.
   We do not undertake an obligation to update the forward-looking
information we are giving today.