Pharma Sanofi CEO: mRNA is likely the 'go-to' vaccine tech for a pandemic, but the 'bar is high' in other diseases

In the global COVID-19 vaccine race, mRNA vaccines quickly got out to the front of the pack and two reached distribution in less than a year. But their quick success in COVID-19 doesn't guarantee mRNA will replace traditional vaccine technologies across the industry, Sanofi CEO Paul Hudson told Barron’s.