SARS-CoV-2 viruses can hide from recognition by the immune system. However, the antiviral immune receptor RIG-I can be stimulated, which improves protection against lethal SARS-CoV-2 infections. Researchers led by Prof. Dr. Gunther Hartmann from the Institute of Clinical Chemistry and Clinical Pharmacology at the University Hospital Bonn, in cooperation with other members of the cluster of excellence ImmunoSensation2 at the University of Bonn, have shown this in mice.