RE: Moonparty26 Apr 2020 11:05
Take another shot
Developing mRNA vaccines is not always straightforward, however. Moderna’s initial candidate vaccine for Zika virus, for example, was well tolerated in people but failed to provoke much of an immune response. With funding from the US government, Moderna went back to the lab, optimized the vaccine sequence and developed another candidate that is, according to Zaks, “at least 20 times more potent” than the first-generation product in mice and monkey testing.