Figure 5. Control of the epidemic using a combination of hospitalization and quarantine in one subpopulation and only hospitalization in the other.

Each contour corresponds to the combinations of b_Q and b_H in subpopulation 2 where R₀ = 1 assuming all infectious individuals are hospitalized in the subpopulation 1 (, , ) considering varying levels of movement: (A) none, (B) low (τ = ρ = 0.05), and (C) high (τ = ρ = 500). Each line represents a particular choice of β_U and β_F such that R₀ = 1.85 when no control measures are introduced. To the left of contours R₀ > 1 and the epidemic can never be controlled (U = uncontrollable area). Standard values are used for other parameters as indicated in Table 1 except unsafe burials which occur with 50% probability (f_j = 0.5).