Characteristics and outcomes of COVID-19 patients with and without asthma from the United
Nine databases from the United States, South Korea, Spain, the UK, and the Netherlands contributed data from January to June 2020. The study describes 666,933 diagnosed and 159,552 hospitalized COVID-19 patients, comparing clinical characteristics and outcomes for those with and without asthma. It was authored by Daniel R. Morales of the University of Dundee.