The Covid Bi-Valent vax was 'tested' on 8 mice before release to the public, because they felt the original was tested sufficiently. So they really may subject mice to this before releasing it on humans.
“....the FDA may require clinical trials which could delay the roll-out to the greater population.”
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It will depend on whether we have a vaccine salesman in the White House, one that can get us “beautiful vaccines” at warp speed.