Preliminary results showed that 81% of immunized subjects developed an immune response against the H5N1 virus after the second immunization. A four-fold increase in HI titers from baseline in 58% of subjects was observed in the 20 mcg group. HI titers greater than 1:40 were developed in 50% of the subjects in the 20 mcg group. The H5N1 vaccine also induced the production of antibodies cross-reacting with two other strains of H5N1 Avian Influenza suggesting Medicago's vaccine potential for cross-protection.
"Results at these lower dosage levels have not been reported for an H5N1 vaccine manufactured with a novel vaccine manufacturing technology," said Nathalie Landry, VP Product Development of Medicago. "H5N1 vaccines are poorly immunogenic in humans and are known to require repeated administrations with an adjuvant to elicit an immune response at low doses."
Full results of this trial will be submitted for publication in a scientific journal and will be available in the coming months. Based on these results, Medicago will proceed with a Phase II clinical trial, expected to commence during the first half of 2010.
About Medicago's pandemic flu vaccine candidate
Medicago's H5N1 vaccine candidate was formulated to protect against the Indonesian influenza virus. It is manufactured in Nicotiana benthamiana, a relative of the tobacco plant, using the Company's proprietary VLP technology. VLPs may have several advantages over traditional flu vaccines. They are made to look like a virus, allowing them to be recognized readily by the body's immune system, however, they lack the core genetic material making them
|SOURCE Medicago Inc.|
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