Friday, February 29, 2008

New and safer smallpox vaccine?

Soybean oil, alcohol, water, and detergents as ingredients in the next smallpox vaccine???

No way!

That's what I thought when I read the tagline on a ScienceDaily article on using oil-based nasal nanoemulsion vaccines. They were first reported in 2003 to vaccinate against influenza, and it's since been tested for HIV and smallpox. They used gp120 to vaccinate against HIV and killed whole vaccinia virus for smallpox. In both, they "were able to promote an immune response." Apparently, for HIV, if mucosal immunity is induced, immunity is conferred for the genital mucosa as well. Crazy. Their HIV vaccine also induced cellular immunity and neutralized antibody to HIV virus isolates--

The smallpox vaccine with nanoemulsion-killed vaccinia would be safer than the current live-attenuated vaccine. This vaccine induced mucosal, antibody, and Th1 cellular immunity. \

Results from both smallpox and HIV vaccine were published this past moth in Clinical Vaccine Immunology and AIDS Research Human Retroviruses, respectively.

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