Table II.

Social network analysis indicators among different groups

Category	All participants			Infected participants			Non-infected participants
	Degree	Closeness	Betweenness	Degree	Closeness	Betweenness	Degree	Closeness	Betweenness
Occupational protection training	218	26	0.23	193	29	0.37	192	30	3.01
Contact with confirmed patients with severe symptoms	306	26	0.23	172	29	0.37	40	32	0.89
Contact with confirmed patients with mild and micro symptoms	280	26	0.23	53	32	0	116	30	1.66
Transporting specimen	87	28	0.07	266	29	0.37	118	29	2.31
Infection of medical staff in the same department	401	26	0.23	276	29	0.37	34	32	0.2
Fever of medical staff in the same department	396	26	0.23	275	29	0.37	132	29	2.31
Infected patients in the department	409	26	0.23	307	29	0.37	122	30	1.34
Fever patients in the department	429	26	0.23	187	30	0.18	129	29	2.31
Directly in charge of bed	269	27	0.15	192	29	0.37	118	31	0.51
Single isolation ward	313	25	3.23	76	30	0.08	87	33	0
Touch the cheek, especially the nose and mouth, during work	97	27	0.07	370	29	0.37	122	29	4.17
Wear medical protective mask or surgical mask correctly	572	25	3.23	362	29	0.37	11	36	0
Self-protection score	558	25	3.23	0	57	0	201	28	5.64
History of exposure at Huanan Seafood Wholesale Market	0	57	0	0	57	0	191	28	5.64
History of contact with wild animals	0	57	0	49	30	0.08	0	60	0
Attended large parties or stayed in crowded places for a long time	64	27	0.07	0	57	0	0	60	0
Whether travelled to other cities	4	37	0	57	31	0	8	36	0
Whether family members diagnosed with infection	77	27	0.15	0	57	0	7	40	0
History of family members’ exposure at Huanan Seafood Wholesale Market	0	57	0	125	29	0.37	14	34	0
Family members include medical staff	180	25	3.23	0	57	0	0	60	0