COVID-19(12) Inflammation(7) Infection(7) risk(7) Hospitalization(5) mechanism(5) outcome(5) Cytokine storm(5) Health(5) Coronavirus disease 2019(5) Diagnosis(5) Mortality(4) Prevalence(4) physical activity(4) SARS-CoV-2(4) Affect(4) diet(3) infected with COVID-19(3) chronic disease(3) COVID-19 infection(3) vaccination efficacy(3) cardiovascular disease(3) social distancing(3) elicit(3) exercise(3) risk factor(3) Characteristics(3) Admission(3) mechanical ventilation(3) IMPROVE(3)