Fig. 8.

(A) Scatter diagram of 1000 estimates of δ* = 3×10⁻⁶ and ρ^* = 2 using Method 3 with 1000 random choices of half of the farms. The curves are lines of constant severe attack rate labeled with their corresponding values. Most of the estimates lie along the curve corresponding to the severe attack rate of 0.3. The green dot is the sample mean of the 1000 estimates. (B) Histogram of 1000 estimates for the severe attack rate of a target epidemic using the estimated epidemic parameters in (A). The target attack rate was 0.30 and the sample mean of the 1000 estimates was 0.31.