Researchers think there's something in kids' blood that protects them from severe COVID-19 complications

Child in mask.
(Image credit: Feverpitched/iStock)

Scientists are still trying to understand why children seem to be less susceptible to COVID-19's most severe complications, but "research suggests that the answer might lie in children's healthy blood vessels," writes David Cyranoski at Nature.

Adults who become very ill from the virus often experience blood clotting, which can bring on life-threatening heart attacks and strokes. This might be because the virus causes inflammation in the blood vessels' lining, called the "endothelium," which is supposed to prevent clotting. In children, the endothelium "is set up perfectly and then just deteriorates with age," says Paul Monagle, a pediatric hematologist at the Melbourne Children's Campus.

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Jessica Hullinger

Jessica Hullinger is a writer and former deputy editor of The Week Digital. Originally from the American Midwest, she completed a degree in journalism at Indiana University Bloomington before relocating to New York City, where she pursued a career in media. After joining The Week as an intern in 2010, she served as the title’s audience development manager, senior editor and deputy editor, as well as a regular guest on “The Week Unwrapped” podcast. Her writing has featured in other publications including Popular Science, Fast Company, Fortune, and Self magazine, and she loves covering science and climate-related issues.