Table 3.
Variability in viral detection per season studied and comparison to national data regarding influenza surveillance available from the Hellenic Center for Disease Control and Prevention
| 2009‐10 | 2010‐11 | 2013‐14 | 2014‐15 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Onset | Peak | End | Onset | Peak | End | Onset | Peak | End | Onset | Peak | End | |
| Influenza season, week/year, national data | 48/09 | 04/10 | 15/10 | 52/10 | 05/11 | 13/11 | 52/13 | 09/14 | 16/14 | 51/14 | 09/15 | 20/15 |
| Study period, week/year | 48/09‐04/10 | 03/11‐11/11 | 47/13‐20/14 | 43/14‐13/15 | ||||||||
| National (N)/Study (S) data | National | Study n = 94 | National | Study n = 106 | National | Study n = 133 | National | Study n = 271 | ||||
| Influenza (+) in ILI | 56.4% | 43.6% | 55.2% | 23.6% | 30.7% | 16.5% | 39.9% | 39.1% | ||||
| Influenza A | 100% | 100% | 95.4% | 92% | 95.8% | 95.5% | 41% | 32.1% | ||||
| Influenza A (H1N1) pdm09 in total A | 99.8% | 100% | 98.9% | 95.7 | 79.4% | 100% | 12.5% | 14.3% | ||||
| Influenza A (H3N2) in total A | 0.2% | 0% | 1.1% | 4.3% | 20.6% | 0% | 86.7% | 85.7% | ||||
| Influenza B | 0% | 0% | 4.6% | 0.9% | 4.2% | 0.8% | 59% | 26.9% | ||||
| RSV (+) study data | 45/94 (47.9%) | 75/106 (70.8%) | 12/133 (9%) | 10/271 (3.7%) | ||||||||
| Mixed virus infection | 27/94 (28.7%) | 31/106 (29.2%) | 1/133 (0.8%) | 9/271 (3.3%) | ||||||||
| Mixed Influenza and RSV | 23/94 (24.5%) | 19/106 (17.9%) | 0/133 (0%) | 3/271 (1.1%) | ||||||||
RSV, respiratory syncytial virus.