Exploring secondary SARS-CoV-2 transmission from asymptomatic cases using contact tracing data

Table 1 Epidemiological parameters of SARS-CoV-2 transmission using two models

	Base case model	Exponential decrease model
Parameters	Maximum likelihood estimate (95% CI)	Maximum likelihood estimate (95% CI)
R_s or R_t=0	1.14 (0.61–2.09)	12.6 (0.69–37.0)
v	0.19 (0.03–0.66)	0.07 (0.01–0.79)
k	0.24 (0.13–0.47)	0.26 (0.11–0.63)
δ	-	0.29 (0.10–0.61)

CI confidence interval. Parameters included the reproduction number of symptomatic cases (R_s), the reproduction number of symptomatic cases at calendar time zero (R_t=0), the reproduction number for an asymptomatic case with respective to a symptomatic case (v), the dispersion parameter (k), and the exponentially decreasing rate of secondary transmission (δ)

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