Common colds versus Covid-19: how T cells can cross-protect

Common colds versus Covid-19: how T cells can cross-protect

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Even though we have lived with COVID-19 for two years, we still don't know conclusively about the novel coronavirus... or the human body's immune response.  Take, for example, the enduring mystery about why some people test negative even when they come into contact with someone in the household with the infection.  

A new study led by researchers at Imperial College London may have the answer.  The study found that high levels of pre-existing T cells made by the body when infected with other human coronaviruses, such as the common cold, may protect against COVID-19 infection.

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