Table 2. Characteristics of imported cases.

Patient ID	Gender	Age (years)	Nationality	Date of diagnosis	Initial symptoms	Epidemiological history	BCG vaccine	Influenza vaccine
Case 1	Male	8	Spain	2020/3/18	Asymptom	2020/3/16 from Spain to Qatar, 2020/3/17 to Thailand, 2020/3/18 to Shanghai	No	No
Case 2	Male	8	United Kingdom	2020/3/22	Asymptom	2020/3/20 from United Kingdom to Shanghai	No	No
Case 3	Female	10	United Kingdom	2020/3/22	Cough (2 days)	2020/3/20 from United Kingdom to Shanghai	Yes	No
Case 4	Female	17	China	2020/3/23	Fever (1 day)	2020/3/17 from United Kingdom to Shanghai	Yes	No
Case 5	Male	17	Canada	2020/3/23	Asymptom	2020/3/21 from Canada to Shanghai	Yes	Yes
Case 6	Male	13	United Kingdom	2020/3/23	Cough (1 day)	2020/3/23 from United Kingdom to Shanghai	Yes	No
Case 7	Female	15	United States	2020/3/23	Asymptom	2020/3/16 from the United States to Sweden, 2020/3/23 to Shanghai	No	Yes
Case 8	Female	8	China	2020/3/25	Asymptom	2020/3/24 from the Philippines to Shanghai	Yes	No