Figure 6From: Dynamic models of pneumococcal carriage and the impact of the Heptavalent Pneumococcal Conjugate Vaccine on invasive pneumococcal disease Estimated degree and duration of protection of the vaccine. Contour plane of Poisson deviance calculated from fitting the degree and duration of PCV7 protection with the mixing parameter (ε) and competition parameter cN fixed to be respectively 0.87 and 0.85.Back to article page