1. mRNA vaccines are new, but the technology is not.
Researchers have been studying mRNA (messenger ribonucleic acid) vaccines for decades. Dr. Rinderknecht says two closely related coronavirus diseases – SARS (Severe Acute Respiratory Syndrome) in 2003 and MERS (Middle East Respiratory Syndrome) in 2012 – brought mRNA vaccine development to where it is today.
“Vaccines for those previous coronavirus diseases didn’t get finished, because the diseases were contained and never became a world-wide threat – unlike COVID-19. mRNA vaccines have also been studied for the prevention of influenza, Zika, rabies and cytomegalovirus,” Dr. Rinderknecht says.
The only MRNA treatment I'm aware of being used presently in medicine is in cancer tumors it's isn't used as a vaccine but in treating. It works by targeting the n protein, attacking the vessels feeding the tumor. So far great success as a treatment but no long term studies to date. No mRNA vaccine has ever been used before 2020 on any humans.