Mixed models. Subfigures a-p show the decrease of the total outbreak size relative to the size of the total population when the fraction of repetitive and clustered contacts is increased. 25% rep means that one fourth of all contacts on a given day repeat every day but that three fourths of the contacts on a given day are unique. Clustering coefficients CC are only defined and calculated for the repetitive fraction of the contacts. All simulations were calculated for an infectious period of 14 days. Orange circles stand for β·n·τ = 1.2, red squares for β·n·τ = 1.8, blue triangles for β·n·τ = 2.4 and green rhombi for β·n·τ = 3.0. The number of daily contacts n increases in steps of 4 per line of the subfigures, beginning with n = 8 in the first line. The first column of the subfigures shows CC = .0, the second column CC = .2, the third column CC = .4 and the fourth column CC = .6.