NIH study uncovers blood vessel damage & inflammation in COVID-19 patients' brains but no infection

(NIH/National Institute of Neurological Disorders and Stroke) In an in-depth study of how COVID-19 affects a patient's brain, National Institutes of Health researchers consistently spotted hallmarks of damage caused by thinning and leaky brain blood vessels in tissue samples from patients who died shortly after contracting the disease. In addition, they saw no signs of SARS-CoV-2 in the tissue samples, suggesting the damage was not caused by a direct viral attack on the brain.