Researchers looked at blood samples from the 40 who experienced long COVID symptoms, compared them to controls who were not infected with COVID-19, and found that those who had long COVID had evidence of inflammation (increased complement activity), blood

New long COVID study uncovers high inflammation in patients as Senate calls for more research on 'crisis' A new study in Science is shining a light on the continuing impact of long COVID, with research revealing further and continuing health concerns for some of the 16 million sufferers in the U.S. Long COVID is a syndrome, or collection of symptoms, that continue or develop after an acute COVID-19 infection and can last weeks, months or years. There is no test to confirm if symptoms are related to long COVID. Yahoo

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Researchers looked at blood samples from the 40 who experienced long COVID symptoms, compared them to controls who were not infected with COVID-19, and found that those who had long COVID had evidence of inflammation (increased complement activity), blood cell dysregulation (hemolysis and platelet activation) and tissue injury in their blood.

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