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. 2016 Sep;22(9):1644–1646. doi: 10.3201/eid2209.152116

Table 1. Results of contact investigation of a patient with an imported case of Middle East respiratory syndrome coronavirus infection, China, 2015.

Category Contacts, no. (%), N = 110 Close contacts,* no. (%), n = 44 Common contacts, no. (%), n = 66
Sex
M 59 (54) 34 (77) 25 (38)
F
51 (46)
10 (23)
41 (62)
Age group, y
17–29 39 (35) 10 (23) 29 (44)
30–59 66 (60) 30 (68) 36 (55)
60–70
5 (5)
4 (9)
1 (2)
Tracing approach
Personal interview 48 (44) 15 (34) 33 (50)
Hotline 28 (25) 18 (41) 10 (15)
Video reviewing
34 (31)
11 (25)
23 (35)
Contacts
Air travel 27 (25) 6 (14) 21 (32)
Land travel 24 (22) 24 (54) 0
Community
59 (54)
14 (32)
45 (68)
Management†
Quarantine in designated facility 89 (84) 40 (100) 49 (74)
Self-monitoring at home
17 (16)
0
17 (26)
Symptoms†
Symptomatic 3 (3) 2 (5) 1 (2)
Asymptomatic 103 (97) 38 (95) 65 (98)

*Close contacts include 2 from Taiwan and 2 from South Korea that returned to their countries before they were identified. We notified local health authorities about these 4 contacts.
†Numbers and percentages for contacts and close contacts exclude 4 contacts who left mainland China before they were identified.

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