Commentary: Development of a Comparative European Orthohantavirus Microneutralization Assay With Multi-Species Validation and Evaluation in a Human Diagnostic Cohort - Clement, Jan; Groen, Jan; van der Groen, Guido; Van Ranst, Marc; Maes, Piet; Osterhaus, Albertus D. M. E. (Frontiers in Cellular and Infection Microbiology, 2021)