For the millions of people who survived COVID-19 infection only to experience lingering symptoms, referred to colloquially as long COVID, much remains unknown.

Researchers at University of Michigan Health, part of Michigan Medicine, are examining lung biopsies from patients living with persistent respiratory symptoms, such as shortness of breath, to help better define the pattern of damage associated with COVID-19. Their work has led to a surprising finding: some patients’ symptoms could be due to damage that existed before getting COVID-19.

For the full text, please visit: "Pathologists find evidence of pre-existing chronic lung disease in people with long COVID."

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