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Fig. 4 | BMC Medicine

Fig. 4

From: Determinants of high residual post-PCV13 pneumococcal vaccine-type carriage in Blantyre, Malawi: a modelling study

Fig. 4

Projections of post-vaccination changes in the force of infection. a The post-vaccination force of infection (FOI) of different age groups (0–5 years in green, 6–7 in blue and 8–9 in red) as calculated for each of 100,000 simulations using parameter samples from posteriors. b For each FOI of each age group and each 100,000 simulations using parameter samples from posteriors, the time point of minimum derivative was calculated, resulting in one distribution per age group (coloured curves, 0–5 years in green, 6–7 in blue, 8–9 in red). This time point is as a proxy for the period of fastest FOI reduction. The shaded areas are yellow for the post-vaccination period with no carriage data, white for the post-vaccination period with data, and grey for the post-vaccination projected period up to 10 years. Dotted vertical lines mark survey dates. The x-axis origin marks PCV13 introduction

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