Table 4 Parameter Estimates for Ebola Sudan

From: A review of epidemiological parameters from Ebola outbreaks to inform early public health decision-making

Parameter

Estimate

Incubation Period Distribution (range of central estimates, (range)) *

3.35–14 (2–21) days

R 0 (range of estimates)

1.34–2.7

 Chowell et al. (estimate, s.d.)44

1.34, 0.03

 Legrand et al. (estimate, (95% CI))59

2.7 (2.5, 4.1)

 Ferrari et al. (estimate, (95% CI))58

1.79 (1.52, 2.30)

Delay Distributions (days)

 Infectious period…

Chowell et al. (mean, s.d.) 44

3.50,0.67

 Symptom onset to…

 … hospitalization

2

Borchert et al. (mean, (range), n) 51

2 (0–8), n=26

 … death

9

Baron et al. (median, (range), n) 24

Med=9 (5–15), n=22

 … discharge

12

Okware et al. (mean, (range), median) 53

12, (2–35), 13

 Hospitalization to…

 … discharge (range of mean estimates)

8–10

Borchert et al. (mean, (range), n) 51

8.0 (2–11) n=8

Okware et al. (mean, (range)) 53

10 (1–29)

 … death

6.1

Borchert et al. (mean, (range), n) 51

6.1 (2–13) n=18

Case Fatality Rate † (range of estimates)

0.53–0.69

 WHO International Study Team (estimate, n, year of outbreak)1

0.53, n=284, 1976

 Baron et al. (estimate, n, year of outbreak)24

0.65, n=34, 1979

 Okware et al. (estimate, n, year of outbreak)53

0.53, n=425, 2000–2001

 Lamunu et al. (estimate, n, year of outbreak)52

0.53, n=425, 2000–2001

 Chowell et al. (estimate, n, year of outbreak)44

0.53, n=425, 2000–2001

 Borchert et al. (estimate, n, year of outbreak)51

0.69, n=26, 2000

  1. Med=Median; s.d.=standard deviation.
  2. *See Fig. 1 for individual estimates.
  3. †See Fig. 2 for CFR estimates.