Fischer, B., Farr, M., Gummert, J., Knabbe, C., Vollmer, T. (2025). High-frequency PCR-testing as a powerful approach for SARS-CoV-2 surveillance in the field of critical infrastructure: A longitudinal, retrospective study in a German tertiary care hospital. PLoS ONE. https://doi.org/10.1371/journal.pone.0317009