Researchers hunt for clues in our blood to discover COVID-19 vaccines of the future – ABC News

Although front-runner COVID-19vaccines from Pfizer and Moderna boast efficacy rates of greater than 90%, scientists say it is crucial to continue to study new vaccines, which could be even better than the first-generation shots.
As these vaccines near the finish line, scientists will face a predicament: Successful authorization of the first vaccines will make it difficult, if not impossible, to continue to study COVID-19 vaccines of the future.
Now, a group of researchers say they are zeroing in…

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