They were not using 40,000 people trials in 2015 for mRNA based technologies. That was the point. Just because something was in its infancy in the lab doesn't

They were not using 40,000 people trials in 2015 for mRNA based technologies. That was the point. Just because something was in its infancy in the lab doesn't mean you can say its been around almost 7 years already. The concern that there is no long term data is a valid one. Adenovirus vector formulations do have a longer history but have caused leukemia's in the past that manifest 4 years later for single gene mutation correction trials.