Table 2.

Estimates for the basic reproduction number varying with effects of imported cases.

$\mathit{\alpha }$	${\mathit{R}}_0$	95% CI*
0.0	1.27	(0.48, 2.95)
0.1	1.05	(0.40, 2.47)
0.3	0.78	(0.30, 1.86)
0.5	0.62	(0.24, 1.49)
0.7	0.51	(0.20, 1.24)
1.0	0.40	(0.16, 0.99)

95% CI*: Profile-likelihood-based 95% confidence intervals.