Using the Google Tools, set the search for mRNA vaccine articles written in 2019.(You have to use a desktop for setting the time frame).

There will be numerous science journals and articles that appear on this emerging technology.

The overall scientific consensus in 2019 was this was an exciting medical development, and it would probably become available in FIVE YEARS.

I could not understand most of the journals, but it was clear that despite their optimism for this new technology, there were many known issues caused to the primate test subjects that they would have to overcome before making it ready.

18 months later, a billion people have been injected with this!