Article is paywalled, but headline implies mRNA tech is behind all Covid-19 vaccines, whereas J&J, AZ, SputnikV, and several others being used around the world are not (most of them adenovirus based, I think). Should say something more like "...the mRNA tech behind two Covid-19 vaccines", or "...behind Pfizer and Moderna vaccines".
Good point, I should have clarified that it's two specific vaccines. I can't edit the submission now.
Modified headline reads like an obit, please change. She is fine.