Covid-19: risk factors for severe disease and death

By R. Jordan, P. Adab, K. Cheng. British medical journal, 2020

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A long list is emerging from largely unadjusted analyses, with age near the top

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Symptom Duration and Risk Factors for Delayed Return to Usual Health Among Outpatients with COVID-19 in a Multistate Health Care Systems Network — United States, March–June 2020 (2020, background): “Older age and presence of multiple chronic medical conditions have previously been associated with illness severity among adults hospitalized with COVID-19 (8,9); in this study, both were also associated with prolonged illness in an outpatient population.”
Elevated Glucose Levels Favor SARS-CoV-2 Infection and Monocyte Response through a HIF-1α/Glycolysis-Dependent Axis (2020, positive): “diseases, and diabetes are among the main risk factors for severe COVID-19 symptoms (Guo et al., 2020; Jordan et al., 2020; Zhou et al., 2020; Zhu et al., 2020).”