In Am J Trop Med Hyg 77: 365–370 by Moudy and others,there were errors in the p values reported for disseminationand transmission on days 5 and 7 in Table 1. The p values fordissemination and transmission on day 5 are 0.517 and 0.056,respectively, and on day 7 are 0.002 and 0.005, respectively.