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. 2021 Jun 23;8(6):201546. doi: 10.1098/rsos.201546

Table 2.

Model parameter values, data sources and references.

parameter
value
Source
distribution of generation times (days) 1.3 + Weibull (scale = 5.67, shape = 2.83) [17,18]
basic reproduction number R0 = 2.5 assumed
relative infectiousness of subclinical cases csub = 0.5 [19,20]
relative onward transmission from isolated or quarantined cases cisol = 0 perfect isolation and quarantine assumed
proportion of subclinical infections psub = 0.33 [20]
relative test sensitivity for subclinical infections ptestsubclin = 0.65 [21]
household secondary attack rate SARhome = 0.2 (other values simulated in figure 1b) [12]
time from testing to return of test result ttest = 1 day estimated
test sensitivity (probability of an infected individual testing positive) as a function of the number of days (0–38) since infection. Sensitivity is assumed to be zero more than 38 days after infection. 0 1 2 3 4 5 6 [3]
0.00 0.00 0.01 0.04 0.33 0.62 0.75
7 8 9 10 11 12 13
0.79 0.80 0.79 0.76 0.72 0.68 0.64
14 15 16 17 18 19 20
0.60 0.56 0.52 0.48 0.44 0.40 0.37
21 22 23 24 25 26 27
0.34 0.32 0.30 0.28 0.26 0.24 0.22
28 29 30 31 32 33 34
0.20 0.18 0.16 0.14 0.12 0.10 0.08
35 36 37 38
0.06 0.04 0.02 0.00
proportion of people living in a household of size 1 to 8 1 2 3 4 5 6 7 8 [4]
17% 36% 19% 17% 7% 3% 0.7% 0.6%