Large genetic study on severe COVID-19 (IMAGE) Universitatsklinikum Bonn Caption (from left): Jannik Boos, Prof. Kerstin Ludwig und Dr. Axel Schmidt confirm three other genes for increased risk in addition to the known TLR7 gene. Credit University Hospital Bonn (UKB) / Collage Usage Restrictions The impression in connection with the service is free, while the image specified author is mentioned. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.