Are mRNA actual vaccines or gene splicing experiments
MRNA are not vaccines as they are classically defined.
The technology has been around about 30 years. Prior to this go ‘round, they have killed test animals when the animals were exposed to a second virus -— after a waiting period. Those were never used.
My understanding is these very issues, and other concerns, are why these MRNA ‘’vaccines’’ are not FDA approved. They are for EMERGENCY use, only.