evidence: What people might not understand is that extensive research was being done on mRNA technology and other mRNA vaccines for years. That decade plus of experience and the innovation of mRNA technology itself is what allowed Moderna to produce its Covid mRNA vaccine so quickly as the pandemic struck. And it could also change the future of medicine. [...] Moderna delivered the first doses of its Covid-19 vaccine to the NIH for testing on Feb. 24, 2020, and "the first Moderna shot went into a volunteer's arm in Seattle on March 16, 2020," according to Afeyan. [...] One of the reasons Moderna's mRNA Covid vaccine development moved so quickly is because scientists had been working with mRNA for years.