Sensitivity to hospitalisation rate, parameter η.

(A) Equilibrium curves for different values of η (1, 0.6, 0.4, 0.2, from lower to higher peak). (B) Estimated basic reproduction numbers for different values of η. The black full line on the left shows the lower value of R₀ for which an endemic equilibrium solution exists. The red and green dotted lines represent the values of R₀, derived from the estimated forces of infection, for Foni Kansala and Kilifi, respectively. Circles highlight the values of ηcorresponding to the curves in (A).