Table. Epidemiological parameters used in the estimation of transmission in an outbreak of chikungunya in Central Italy, 2017.
Parameter | Unit | Distribution | Min and max a
parameter value |
Reference |
---|---|---|---|---|
Date of imported infection | Date | Uniform | 1 May; 15 Nov | NA |
Mosquito biting rate | Bites/mosquito/day | Uniform | 0.08; 0.10 | Own estimate from [7] |
Probability of vector-to-human transmission per bite | % | Uniform | 14; 84 | [21] |
Probability of human-to-vector transmission per bite | % | Uniform | 75; 90 | [22] |
Extrinsic incubation period | Days | Uniform | 2; 3 | [23] |
Intrinsic incubation period | Days | Uniform | 1; 12 | [24] |
Human infectious period | Days | Uniform | 2; 7 | [24] |
Probability of developing symptoms | % | Uniform | 65; 93 | [25] |
Probability of being detected | % | Uniform | 44; 80 | [25] |
Delay between symptom onset and detection | Days | Gamma | Scale: 8.53; shape: 1.725 | Own estimate from [26] |
Max: maximum; min: minimum; NA: not applicable.
a Unless otherwise specified.