DDX41 and COVID-19: The Abs C002, C119, C121, C135, and C144 obtained from peripheral blood mononuclear cell of patients with COVID-19, interact with the RBD using different binding modes and present a strong pseudovirus neutralization effect (IC50: 9.0 ng/mL, 9.0 ng/mL, 6.7 ng/mL, 16.0 ng/mL, and 6.9 ng/mL, respectively).