Table 1.

Epidemiological parameters for Ebola virus disease used in this study.

Parameter	Description	All countries	Guinea	Liberia	Sierra Leone	Ref.
1/α days	incubation period	11.4	10.9	11.7	10.8	[2]
1/γh days	symptom onset to hospitalization	5	5.3	4.9	4.6	[2]
1/γi days	symptom onset to hospital discharge	16.4	16.3	15.4	17.2	[2]
1/γd days	symptom onset to death	7.5	6.4	7.9	8.6	[2]
1/γf days	infectious period between death and burial	2	2	2	2	[10]
θ %	Proportion of infectious cases hospitalized	54	52	51	58	[21, 23]
δ %	Ratio of case-fatality	70:8	70.7	72.3	69.0	[2, 17]
1/γih days	Time from hospitalization to recovery	11.4	11	10.5	12.6	Calculation
1/γdh days	Time from hospitalization to death	2.5	1.1	3	4	Calculation
θ1 %	Fraction of infected hospitalization	36.8	38.2	33.9	36.1	Calculation
δ1 %	Case fatality rate, unhospitalized	52.6	48.7	57.3	52.7	Calculation
δ2 %	Case fatality rate, hospitalized	34.7	19.4	42.7	41.4	Calculation

These epidemiological parameters follow from the study of WHO Ebola Response Team [2, 23] and [10,17]. They are consistent across the modeling literature for different outbreaks.

1/γ_ih = 1/γ_i − 1/γ_h, 1/γ_dh = 1/γ_d − 1/γ_h, ${\mathrm{\theta }}_1=\frac{\mathrm{\theta }[{\mathrm{\gamma }}_i(1-{\mathrm{\delta }}_1)+{\mathrm{\gamma }}_d{\mathrm{\delta }}_1]}{\mathrm{\theta }[{\mathrm{\gamma }}_i(1-{\mathrm{\delta }}_1)+{\mathrm{\gamma }}_d{\mathrm{\delta }}_1]+(1-\mathrm{\theta }){\mathrm{\gamma }}_h}$

${\mathrm{\delta }}_1=\frac{\mathrm{\delta }{\mathrm{\gamma }}_i}{\mathrm{\delta }{\mathrm{\gamma }}_i+(1-\mathrm{\delta }){\mathrm{\gamma }}_d},{\mathrm{\delta }}_2=\frac{\mathrm{\delta }{\mathrm{\gamma }}_{ih}}{\mathrm{\delta }{\mathrm{\gamma }}_{ih}+(1-\mathrm{\delta }){\mathrm{\gamma }}_{dh}}$