How the Common Cold Shields Children From COVID-19

Researchers from Karolinska Institute found that children’s memory T cells generated by common colds can react to SARS-CoV-2, potentially explaining their milder COVID-19 symptoms. The memory T-cell response to coronaviruses was observed to develop as early as age two, with reactions being stronger earlier in life and weakening as individuals age.

During the COVID-19 pandemic, medical professionals and researchers observed that children and teenagers who contracted the virus exhibited milder symptoms compared to adults. This phenomenon may be attributed to the presence of memory T cells…

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