Table 2.

Attack rate according to characteristics of passengers involved in a flight-associated outbreak of COVID-19 in January–February 2020.

Characteristics	Total N = 335	Number of cases N = 16	Attack rate (%)	P
Departure city				<0.001
Wuhan	109	15	13.76
Not Wuhan	226	1	0.44
Sex				0.565
Male	149	6	4.03
Female	186	10	5.38
Age (years)				0.010
<20	69	0	0.00
20–39	182	9	4.95
40–59	71	7	9.86
≥60	13	0	0.00