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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).

From: Ostreid herpesvirus 1 detection and relationship with Crassostrea gigas spat mortality in France between 1998 and 2006

  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%