Anti- neutrophil extracellular traps (NET) Abs were elevated in 328 COVID-19 pts, 27% IgG & 60% IgM. Net Abs assoc w/ circulating NETs, impaired O2 ventilation, high D-dimers. They likely impair NET clearance and may worsen thromboinflammation. https://t.co/xRNKqKjxzS