Study identifies immunity threshold for protection against COVID-19 in children

As COVID-19 becomes endemic, an important group of people who continue to require vaccination is future birth cohorts of children. Yet, in the face of everchanging variants, as well as the waning of antibodies with time after each dose, key questions remain: What is the threshold of immune response against SARS-CoV-2 needed to protect against COVID-19 and how many doses of mRNA vaccination are required to reach that threshold?

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