New research helps explain why young children have lower rates of severe COVID-19 than adults. A study of infants and young children found those who acquired SARS-CoV-2 had a strong, sustained antibody response to the virus and high levels of inflammatory proteins in the nose but not in the blood. This immune response contrasts with that typically seen in adults with SARS-CoV-2 infection. The research was published in the journal Cell.
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