Smoking and severe illness in hospitalized COVID-19 patients in Japan

ConclusionsThe severity of COVID-19 was not associated with current or former smoking per se but with the comorbidities caused by smoking. Thus, smoking cessation is likely to be a key factor for preventing smoking-related disease and hence for reducing the risk of severe COVID-19.
Source: International Journal of Epidemiology - Category: Epidemiology Source Type: research