Cigarette smoke increases infection severity of SAR-CoV-2 in airway cells in culture

Cigarette smoking appears to be associated with more severe COVID-19, but the underlying mechanisms have not been deciphered. The results of infection of airway cells in culture with SARS-CoV-2 provide some insight. Smoking is the most important cause of chronic lung disease, which in turn is a risk factor for severe COVID-19. Some studies have …

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