Fig. 1.

Kaplan-Meier survival curves for each batch (Clyde River, Patonga Creek, Shoalhaven River) of oysters challenged with OsHV-1 (solid line) and 95% confidence intervals (dashed line). Each batch comprised n = 73–86 oysters at the onset of the viral challenge and n = 12 live oysters were sampled from each batch on days 1, 2, 3, 5, and 7. Different letters (a and b) indicate significance (p < 0.05) identified by a mixed Cox regression model.