Reaction controls and interpretation
Lyophilised RNA and DNA (AmpliRun®, Vircell, Granada, Spain) were used
as positive controls for all viruses tested. All samples showing
amplification of any of the viral markers (cycle threshold
<37) and the RNase P control were considered positive, and all
samples without amplification of the viral markers but with
amplification of the RNase P control were considered negative.