affiliation not provided to SSRN, affiliation not provided to SSRN, University of Manitoba, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Cologne - Institute of Virology, University of Cologne - Institute of Virology, University of Cologne - Institute of Virology, German Center for Infection Research (DZIF), affiliation not provided to SSRN, Charité - Universitätsmedizin Berlin - Department of Infectious Diseases and Respiratory Medicine, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Cologne, University of Manitoba, affiliation not provided to SSRN, University of Cologne - Dept. of Ophthalmology, University of Cologne - Institute for Dental Research and Oral Musculoskeletal Biology and affiliation not provided to SSRN