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New Inhalation Anthrax Vaccine

by Medindia Content Team on  September 3, 2004 at 11:09 AM General Health News   - G J E 4
New Inhalation Anthrax Vaccine
A new anthrax vaccine may offer a faster and easier way to protect the general population and soldiers at war in the event of a deadly bioterror attack. Scientists have developed a powdered form of the vaccine that could potentially be inhaled through the nose, thus eliminating needle injections.
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The new formulation is based on an anthrax recombinant protective antigen (rPA), a genetically engineered protein. Researchers say the powdered formula is more stable than the injected liquid version and can withstand wider temperature extremes, in more extreme conditions without refrigeration.

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The vaccine has not yet been tested in humans, but investigators say clinical trials could be possible within the next two to three years.In laboratory tests using rabbits exposed to a lethal dose of inhalation anthrax, nasal immunization with the powder resulted in an 83-percent to 100-percent survival rate. The results are similar to the protection offered by the injected formula.
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