Table 1.

Information of the confirmed cases of COVID-19 in the cluster.

	Frist-generation	Second-generation				Third-generation		Fourth-generation	Fifth-generation
Patient	1	2	3	4	5	6	7	8	9	10
Sex	Female	Male	Male	Female	Female	Male	Male	Female	Female	Female
Age	45	14	54	53	44	47	54	53	55	83
Exposure cause	Living history of Xiaogan	Living history of Xiaogan	Have lunch with 1,2	Have lunch with 1,2	Accept 1,3,4	Accept 1,2,3,4	Contact 5	Contact 6	Family of 8	Family of 8
Date of exposure	Before Jan 22	Before Jan 25	Jan 23	Jan 23	Jan 27 and 31	Jan 29	Jan 30	Feb 2	Feb 2–8	Feb 2–8
Date of onset	Jan 23	Jan 26	Jan 30	Jan 31	Feb 2	Feb 4	Feb 3	Feb 9	Feb 10	Feb 12
Date of quarantine	Jan 27	Jan 28	Jan 29	Jan 28	Feb 5	Feb 5	Feb 8	Feb 9	Feb 10	Feb 10
Date of confirm	Jan 28	Jan 30	Feb 2	Feb 4	Feb 7	Feb 7	Feb 8	Feb 10	Feb 12	Feb 13
Date of discharge	Feb 9	Feb 11	Feb 20	Feb 24	Mar 11	Feb 26	Feb 26	Feb 26	Feb 28	Feb 28
Exposure time (longest/shortest) (d)	−/1	−/4	7	8	6/2	6	4	7	8/2	8/2
Interval between onset and confirm (d)	5	4	3	4	5	3	5	1	2	1
Interval between onset and discharge (d)	17	16	21	24	38	22	23	17	18	16

− Indicates that the exposure time of patients 1–2 cannot be accurately estimated due to the long-term residence in the epidemic area.