Table 3 Main mortality rate of Crassostrea gigas in the different French growing areas between 1998 and 2006 (passive surveillance) and proportions of OsHV-1 positive samples in each area (passive and active surveillance).
Mediterranean lagoons | Arcachon Bay | Charente-Maritime | Vendée | South Brittany | North Brittany | Normandy | |
|---|---|---|---|---|---|---|---|
Mean mortality rate | 41% | 39% | 37% | 38% | 43% | 40% | 50% |
Mean OsHV-1 detection | 18% | 5% | 18% | 35% | 22% | 14% | 14% |