Fig. 7. Outbreak control. Effect of basic reproduction number R₀.

Increasing the basic reproduction number beyond one increases the maximum exposed and infectious populations E_max and I_max. The converged susceptible and recovered populations S_∞ and R_∞ at endemic equilibrium converge towards zero and one. The time to reach the maximum infectious population reaches its maximum of 213 days at a basic reproduction number R₀ = 1.22 and decreases for increasing basic reproduction numbers. Latent period A = 5 days, infectious period C = 20 days, basic reproduction number, and initial exposed fraction E₀ = 0.010.