Who Gets Sickest From COVID-19?

It’s a recurring concept of the COVID-19 disaster: The virus sweeps its way by a local community, and, regardless of staying uncovered to it in the similar area at around the similar time, persons establish vastly different signs. Some barely come to feel anything at all — a scratchy throat, if that — though other folks commit months in the ICU with ravaged lungs, unable to breathe on their possess.

These scattershot results stem from huge variation in how our bodies reply to the virus. To mount the strongest protection, says Boston Children’s Clinic immunologist Hani Harb, the immune system

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