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Figure 3 | BMC Public Health

Figure 3

From: The impact of media coverage on the transmission dynamics of human influenza

Figure 3

Optimality effect when the weight constraint for the control varies and media has a beneficial effect on the vaccine. Graphs of the optimality system when media coverage has a beneficial effect on the vaccination rate and when the weight constraint for the control varies. (a) Graph of infectives, (b) Graph of vaccinated individuals. Initial conditions: S(0) = 20.0, I(0) = 25.0, V(0) = 50.0, R(0) = 40.0. The value of the weights used are (i) B2 = 25.0 corresponds to variables with subscript 1 (++), (ii) B2 = 2500.0 corresponds to variables with subscript 2 (xx), (iii) B2 = 250000.0 corresponds to variables with subscript 3 (**). The value B1 = 0.0025 is kept constant in all three cases.

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