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Scientists Search For Correlates Of Protection For COVID-19 Vaccines : Shots

Angela Weiss/AFP via Getty Images hide caption toggle caption Angela Weiss/AFP via Getty Images To understand vaccine-induced immunity more fully, researchers are comparing antibody levels in people who received the Moderna vaccine but still got COVID-19 with levels in people who got the vaccine but didn t fall ill. Angela Weiss/AFP via Getty Images It took many months and tens of thousands of volunteers to gather the data showing that the current crop of COVID-19 vaccines are safe and effective. But what if new vaccines are needed to deal with dangerous variants of the coronavirus? Waiting months is not an attractive option.

New Blood Tests Should Show How Long A COVID-19 Vaccine Will Protect You

Listen • 4:09 To more fully understand vaccine-induced immunity, researchers are comparing antibody levels in people who received the Moderna vaccine but still got COVID-19 with levels in people who got the vaccine but didn t fall ill. It took many months and tens of thousands of volunteers to gather the data showing that the current crop of COVID-19 vaccines are safe and effective. But what if new vaccines are needed to deal with dangerous variants of the coronavirus? Waiting months is not an attractive option. So researchers are trying to come up with tests that can be performed using a blood sample that will determine not only whether a vaccine will work but also for how long.

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