Figure 6From: The roles of maturation delay and vaccination on the spread of Dengue virus and optimal control The influences of the waning rate θ and the infection rate of vaccinated members σ on the elimination of Dengue, where \(\pmb{\tau=5}\) , \(\pmb{b=1}\) , and other parameters are fixed as in Table 3 : (a) \(\pmb{\theta=1/20}\) , \(\pmb{1/50}\) , \(\pmb{1/100}\) , \(\pmb{1/200}\) , and \(\pmb{1/300}\) ; (b) \(\pmb{\sigma=0.05}\) , 0.1, 0.15, 0.2, and 0.25. Back to article page