Clinical features and risk factors associated with morbidity and mortality among patients with COVID-19 in northern Ethiopia

•Compulsory quarantine of all Ethiopian patients with confirmed severe acute respiratory syndrome coronavirus-2 infection enabled analysis of the proportion of asymptomatic cases.•Comprehensive clinical features and representative morbidity and mortality outcomes of patients with coronavirus disease 2019 (COVID-19) in Sub-Saharan Africa were determined.•A significant proportion of patients were asymptomatic or presymptomatic at clinical presentation.•Co-infection with human immunodeficiency virus is a significant risk factor for developing severe COVID-19.