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National Institute of Allergy and
Infectious Diseases (NIAID)
http://www.niaid.nih.gov

FOR IMMEDIATE RELEASE
Tuesday, August 17, 2004

Media Contact:
Paul Williams
(301) 402-1663
niaidnews@niaid.nih.gov
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NIAID Taps Chiron to Develop Vaccine Against H9N2 Avian Influenza

Award Part of NIAID Pandemic Influenza Preparedness Program

The National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH), has issued a task order under an existing contract to Chiron Corporation of Emeryville, CA, for the production of an investigational vaccine based on an H9N2 strain of avian influenza virus that has infected humans and has the potential to trigger a modern-day pandemic.

This project, which is part of the NIAID Pandemic Influenza Preparedness Program, is the second recently announced by NIAID that supports the development and production of a candidate vaccine against a pandemic strain of avian influenza. The other NIAID project targets the H5N1 strain that has resurfaced in Asia after an outbreak earlier this year. In 2004, H5N1 has caused 27 deaths.

In 1999 and 2003, an H9N2 influenza strain caused illness in three people in Hong Kong. Scientists are concerned about H9N2 and other emerging types of avian influenza viruses because as they spread—most commonly through poultry—they continually mutate, increasing chances that they may infect humans, evade the body’s immune response and become more lethal. Of greatest concern is that these ever-changing avian viruses could develop the ability to spread from person to person, resulting in a fast-moving, global pandemic.

“Given the poor condition of public health systems in many developing regions and the ubiquity of modern air travel, the consequences of a widespread outbreak of avian influenza in humans could be severe,” says Anthony S. Fauci, M.D., director of NIAID. “Information generated under this task order will be important for preparing our nation and the world against new influenza viruses with pandemic potential.”

Chiron Corporation will produce the H9N2 vaccine at its manufacturing facility in Siena, Italy. The company will prepare different dosages of the vaccine, which is based on an inactivated strain of the H9N2 virus developed by the Centers for Disease Control and Prevention. Some dosages will contain Chiron’s MF59 adjuvant—a substance designed to boost the vaccine’s protective effect.

The company will produce up to 40,000 doses of vaccine with and without the MF59 adjuvant for clinical trials that will be conducted by NIAID. These trials are currently slated for early next year.

“Because avian influenza viruses like H9N2 have not previously circulated widely among humans, we are likely to have limited, if any, immunity against them. Understanding through clinical trials the safety of the vaccine and the dosage level that will generate a protective immune response is critical,” says Linda Lambert, Ph.D., who oversees the clinical influenza research program funded by the Division of Microbiology and Infectious Diseases at NIAID. “By comparing the vaccines with and without the MF59 adjuvant, we can determine if the adjuvant significantly augments the protective effects of the vaccine, enabling us to use lower doses and thereby extend the vaccine supply.”

Dr. Lambert says that this task order follows one of the key tenets of the NIAID Pandemic Influenza Preparedness Program that supports working with both U.S. and international companies to develop and evaluate the safety and effectiveness of vaccines against influenza viruses with pandemic potential. Results from this project will not only provide important public health information, but may also help make new types of influenza vaccines available to the public.

“A major component of our strategy is to partner with private-sector companies around the world to develop and clinically test promising new vaccine technologies,” she says. “The more studies we can also do with novel types of avian influenza strains such as H9N2 and H5N1, the more likely it is that we may begin to identify patterns that allow us to counteract all of them.”

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Note: This press release was originally posted as "Contract Awarded to Develop Vaccine Against H9N2 Avian Influenza, Contract Part of NIAID Pandemic Influenza Preparedness Program" and, in order to make it more accurate, was amended. Further, the first paragraph of the release has been amended to read, "…issued a task order under an existing contract." Paragraph four has been amended to read, "Information generated under this task order..." and paragraph eight has been amended to read, "Dr. Lambert says that this task order...."

For further information, call 301-402-1663.


NIAID conducts and supports research—at NIH, throughout the United States, and worldwide—to study the causes of infectious and immune-mediated diseases, and to develop better means of preventing, diagnosing and treating these illnesses. News releases, fact sheets and other NIAID-related materials are available on the NIAID Web site at www.niaid.nih.gov.

About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit www.nih.gov.

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Last Updated August 17, 2004