Table 1.

Results from single samples from primary infection

	Paris-Clamart	Bologna
Samples tested	25	93a
Low avidity	21	74
Gray-zone	2	16
High avidity	2	3
Sensitivityb	91.30 %	96.10 %
95 % CIb	79.96–98.93	89.03–99.19
Sensitivityc	92.00 %	96.80 %
95 % CIc	73.97–99.02	90.86–99.33

^aSeven samples excluded as they were IgG-negative with the Elecsys CMV IgG assay

^bResults falling within the gray-zone were excluded from the analysis

^cResults falling within the gray-zone were considered as low avidity for the analysis