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. 2016 Jan 22;82(3):964–971. doi: 10.1128/AEM.02839-15

FIG 3.

FIG 3

Comparison of the effects of season and challenge dose on STEC O157 carriage. The numbers of STEC O157 CFU per RAJ swab during 56 days postchallenge were converted to a single area under the curve (AUC) value for each animal for each trial. Bars represent least-squares means, and error bars indicate standard errors of the mean (SEM). (A) Least-squares mean log10 AUC values by season. AUC values following the summer and winter challenges differed significantly (P = 0.0157). (B) Least-squares mean log10 AUC values by dose. AUC values after high-dose (109 CFU) and low-dose (107 CFU) challenges differed significantly (P = 0.0005).