Association between ABO Blood Group and COVID-19 Pneumonia Severity: A Cross-Sectional Study from Ethiopia's First Designated COVID-19 Treatment Center
ABSTRACT Background: Coronavirus disease 2019 (COVID19), caused by severe acute respiratory syndrome coronavirus 2, spreads rapidly and can cause severe acute respiratory failure; advanced age, chronic disease, and other comorbidities increase the risk of severe infection. By early 2022, more than 477 million cases and...