On 02/05/2021 07:42 PM, Ed Pawlowski wrote:
For approval, yes,this is the first, but it is not the first worked on
to date. It is not new technology.

https://www.cdc.gov/coronavirus/2019...ines/mrna.html

mRNA vaccines have been studied before for flu, Zika, rabies, and
cytomegalovirus (CMV). As soon as the necessary information about the
virus that causes COVID-19 was available, scientists began designing the
mRNA instructions for cells to build the unique spike protein into an
mRNA vaccine.


https://www.biospace.com/article/mod...cine-approach/

Published: Apr 14, 2020

"The company released promising early data from a Phase I trial of its
experimental Zika vaccine this morning, which could possibly set the
stage for similar data for the COVID-19 vaccine."

Yeah, studied. It seemed to be effective in mice and macaques.