ERRATUM
Volume 59, no. 9, p. 5388–5395, 2015. Page 5391, Table 2: It was brought to our attention that there was an inadvertent error in reporting the residual error term (σerror, Table 2) in our model. The minor error is isolated and has no impact on the stated objectives of the paper, the integrity or interpretation of the results, and the final conclusions. Because the pharmacodynamic effect is measured and modeled as log10 of TCID50/ml (viral load), it should in fact be reported and defined as an additive error term in log and not a proportional term as a CV% (coefficient of variation percentage). The additive error term is reported as the standard deviation or square root of the variance provided by NONMEM and, as such, based on the NONMEM output provided in the supplemental material, we report the correct residual error (σerror, Table 2) as 1.07 (square root of 1.15) in log TCID50/ml.