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Novavax H7N9 VLP Influenza Vaccine Enters Animal Testing

  • Novavax H7N9 VLP vaccine produced, purified and entered into preclinical immunogenicity and efficacy studies in less than a month
  • Production of GMP H7N9 clinical trial materials underway

ROCKVILLE, Md., May 10, 2013 (GLOBE NEWSWIRE) -- Novavax, Inc. (Nasdaq:NVAX) today announced that it has completed purification of a lot of A/Anhui/1/13 H7N9 virus-like particle (VLP) vaccine and initiated animal immunogenicity and efficacy studies, including studies intended to evaluate protection against wild-type viral challenges. Novavax began work on the strain in early April. Analysis and optimization of the gene sequences for the key viral hemagglutinin (HA) and neuraminidase proteins, synthesis of the genes, construction of a recombinant baculovirus vector, infection of insect cells, purification of the first batches of VLP vaccine, and administration to animals were all completed in 28 days.

In October 2012, the company reported top-line data from its two Phase I clinical trials of A/H5N1 vaccine conducted under the company's $179 million contract with the U.S. Department of Health and Human Services' Biomedical Advanced Research and Development Authority (BARDA). These trials showed that the VLP avian influenza vaccine was immunogenic at conventional doses without adjuvant and induced strong immunogenicity in all its adjuvanted dose groups including the lowest dose of 3.75µg. In addition to vaccine homologous antibody responses, cross clade immunity was also demonstrated. Such immunity could be important if a pandemic virus undergoes antigenic drift during a vaccine campaign.

"The Novavax team has demonstrated that recombinant vaccine technology can be used to rapidly move from identification of a lethal virus, to production of a vaccine," said Dr. Gregory Glenn, Novavax' Chief Medical Officer. "Based on our recent clinical trials with A/H5N1 vaccine that induced 100% seroprotection using low doses of an otherwise poorly immunogenic vaccine, we are optimistic that our A/H7N9 VLP may induce strong immune responses and perform well in animal efficacy testing."

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