> Pfizer Inc. (New York, NY) in partnership with BioNtech (Germany) has also developed a saRNA prototype vaccine, although the details of this vector/formulatio

> Pfizer Inc. (New York, NY) in partnership with BioNtech (Germany) has also developed a saRNA prototype vaccine, although the details of this vector/formulation have not been disclosed yet. AFAICS, this is not BNT162b2, which is the one that we are talking about. There are 3 other candidates, one of them is the self-amplifying one.