How COVID dysregulates the immune system and affects blood vessels * CBC interview with Dr David Putrino of Mt Sinai Long COVID Clinic
"Scientists found evidence that antibodies--proteins produced by the immune system in response to viruses & other invaders--are involved in an attack on cells lining the brain’s blood vessels..." Cross-referenced in thread on Covid brain damage.
"Acquired Protein S deficiency commonly occurs in COVID-19, with variable contribution to thromboembolic occurrence... Acquired PS deficiency is a relatively common complication of infection with human immunodeficiency virus 1 (HIV-1), varicella, dengue, and SARS-CoV-2, all of which are associated with an increased risk of thrombosis. Acquired PS deficiency is a relatively common complication of infection with human immunodeficiency virus 1 (HIV-1), varicella, dengue, and SARS-CoV-2, all of which are associated with an increased risk of thrombosis."