TABLE 2.
Detection and quantification of NoV in oyster samples
| Sample source (sample no.) | Date (mo/day in 2008) | Mean extraction efficiency (%)a | No. of positive replicates/no. analyzed | NoV GII geometric mean concn (range)b |
|
|---|---|---|---|---|---|
| Uncorrected | Corrected | ||||
| Caterer (75) | 02/13 | 16.1 | 3/4 | 229 (48-2,548) | 1,727 (89-23,162) |
| Producer (79) | 02/14 | 13.7 | 2/3 | 144 (63-273) | 957 (476-2,054) |
| Harvested illegally (82) | 02/25 | 12.9 | 4/4 | 301 (35-913) | 2,361 (273-7,509) |
| Forbidden area (83) | 03/05 | 12.6 | 4/4 | 776 (273-1,885) | 6,076 (211-14,839) |
a
Mean percentage of mengovirus RNA copy number recovered in shellfish extracts relative to the amount of mengovirus added to the samples prior to extraction.
b
Geometric mean concentration of positive samples expressed as the number of RNA copies per gram of DT (range of concentrations detected) before (uncorrected) and after (corrected) correction for the mean extraction efficiency.