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Table 1 Model parameters. Parameters used for the compartmental models of influenza and cryptosporidiosis

From: A methodological framework for the evaluation of syndromic surveillance systems: a case study of England

Parameter

Range

Reference

Uncertainty explored

Influenza

 Reproductive Number (R0)

1.4–3.1

[2528]

Yes

 Incubation period (σ)

1.0–7.0 days

[26, 4650]

Yes

 Infectious period (γ)

2.6–12.0 days

[28, 46, 50]

Yes

 Fraction of symptomatic people (p)

0.5–0.75

[46, 50]

Yes

 Infectivity reduction in asymptomatic people (k)

0.1–1.0

[28]

Yes

Cryptosporidiosis

 Number of people exposed to contaminated water per day (λ)

747–10354

[23, 2932]

Yes

 Average daily un-boiled water consumption in litres (w)

1.8 L

[29]

No

 Number of oocysts released into the water system per litre (o)

10-1,000,000

[3032]

Yes

 Dose-response hyper-parameters (α, β)

0.115, 0.176

[31, 51]

No

 Incubation period (σ)

1.0–21.0 days

[29, 30, 52, 53]

Yes

 Infectious period (γ)

3.0–50.0 days

[30, 54]

Yes

 Fraction of infectious and symptomatic people (p)

0.2–0.9

[52, 54]

Yes