Table 1. Parameter estimates and credible intervals of generation and serial interval distributions of COVID-19 using reported information on infector-infectee pairs and assuming an incubation period with a mean of 5.2 and a SD of 2.8 days, Singapore, 21 January–26 February 2020; Tianjin, China, 14 January–27 February 2020.

Dataset	Scenario	Interval	Estimate (95% credible interval) (days)
Dataset	Scenario	Interval	Mean	SD
Singapore^a	Baseline	GI	5.20 (3.78 - 6.78)	1.72 (0.91 - 3.93)
Singapore^a	Baseline	SI	5.21 (−3.35 - 13.94)	4.32 (4.06 - 5.58)
Tianjin (China)^b	Baseline	GI	3.95 (3.01 - 4.91)	1.51 (0.74 - 2.97)
Tianjin (China)^b	Baseline	SI	3.95 (−4.47 - 12.51)	4.24 (4.03 - 4.95)

COVID-19: coronavirus disease; GI: generation interval; SD: standard deviation; SI: serial interval.

^a Source: Ministry of Health (https://www.moh.gov.sg/news-highlights/, as at 26 February).

^b Source: Tianjin Municipal Health Commission (http://www.tjbd.gov.cn/zjbd/gsgg/, as at 27 February).