3. Results and discussion
3.1. Performance of the assays
3.1.1. Recovery efficiency and repeatability of the skimmed milk
flocculation protocol
Based on the outcome of the normality test, CV values were
calculated with the log10-transformed data generated from the
replicate enumerations for each determinant. Indigenous JCPyV
presented the most repeatable results with a CV of 12.4%. Smaller
variations in HAdV results were found among the 20 river water
replicates (CV: 14.8%), whereas NoV GGII.13 measurements were
more repeatable in mineral water (CV: 20.3%). The highest CV was
calculated for NoV GGII.13 in seawater (CV: 36.3%). The concentration
protocol by means of skimmed milk flocculation proved to
be repeatable for use in the study.