White blood cell NETs trigger autoimmunity in COVID-19

SARS-COV2 takes 10 hours after cell entry to produce thousands of new viral particles. This spread occurs without symptoms as the interferon response is blocked by the virus. Interferon is a signalling protein that warns other cells to stop intracellular machinery that could make more virus.

Nose to lungs = 10 hours
Lung to Alveolar Pneumocytes = 20 hours
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