Figure 3

Modelled antibody trajectories by age category and gender on HI and MN assays. In orange is the posterior predictive distribution for individuals with age < 55 at three time points in 2009, April 2010 and September 2010, with 95% credible interval error bars (3A, 3B). In black is the posterior predictive distribution for individuals with age ≥ 55, with 95% credible interval error bars (3A, 3B). In blue is the posterior predictive distribution for males, with 95% credible interval error bars (3C, 3D). In pink is the posterior predictive distribution for women, with 95% credible interval error bars (3C, 3D). In red is the posterior predictive distribution for patients with any respiratory symptoms, with 95% credible interval error bars (3E, 3F). In grey is the posterior predictive distribution for patients without any respiratory symptoms, with 95% credible interval error bars (3E, 3F).