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(a) Viral load (log10) over time in 6 subjects challenged with an attenuated influenza at time 0. The solid black line is the mean curve. (b) Fitting the mean viral load (log10) over time in 6 subjects (solid line) with a beta density curve f(a,b) (dashed line). The shape parameters a = 2.08 and b = 2.31 are least squares estimates. The relative infectivity curve estimated by the Bayesian model is f(4.68,4.90) (dotted line).
