Figure 1. Inhibition of Puumala virus (PUUV) real-time reverse transcription–PCR by feces, but not saliva or urine, of bank voles. Mean cycle threshold values are shown for different solutions spiked with a cell line–adapted PUUV. Cycle threshold values of negative samples were set at 45. PBS, phosphate-buffered saline; FFU, focus-forming units.