Table 1 Model parameters used (with values obtained from the literature) and best-fit parameters from both scenarios

Scenario 1

 β_f

Foodborne transmission rate

4.24 × 10^–4 (fit to observed data)

(± 25%)

 β_p

Person-to-person transmission rate

2.88 × 10^–7 (fit to observed data)

(± 50%)

 δ

Incubation period^a

3.5 days [2, 3, 7, 12, 25, 28]

(2–10) days

 γ

Duration of infection^a

6 days [7, 25, 28]

(5–10) days

Scenario 2

 β_f

Foodborne transmission rate

4.24 × 10^–4 (fit to observed data)

(± 25%)

 β_p1

Pre-intervention person-to-person transmission rate

1.10 × 10^–6 (fit to observed data)

(± 50%)

 β_p2

Post-intervention person-to-person transmission rate

2.88 × 10^–7 (fit to observed data)

(± 50%)

 δ

Incubation period^a

3.5 days [2, 3, 7, 12, 25, 28]

(2–10) days

 γ

Duration of infection^a

6 days [7, 25, 28]

(5–10) days