African or African American? That is the question. The Duffy antigen and the Chemokine Storm in Covid-19

African Americans have been heavily hit by the COVID-19 pandemic. The reasons for the specially severe forms of the disease in Black Americans have not been fully uncovered. I present here a hypothesis that arguably gives the blood group marker and chemokine decoy receptor Duffy protein a central role in quenching the Chemokine Storm as present in the severe forms of the COVID-19 disease.