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Technology behind this mrna vaccine. we often talk about how within nine months of this coronavirus, we got vaccines that were safe and effective. but the truth is, it took three days to develop these mrna vaccines. the rest of it was all testing. can we expect that because of that extraordinary technology, if there are new variants, we will be able to go back to the mrna process, and within a few days, have a new vaccine for that variant? >> the mrna technology, fareed, has been getting develop...