Serologic screenings for H7N9 from three sources among high-risk groups in the early stage of H7N9 circulation in Guangdong Province, China

Table 3 Gender and age of 196 individuals with possible exposure to a contaminated environment

	Transportation workers	Market staffs	Poultry sales and their households
Male	17	10	115
Female	0	4	50
Total	17	14	165
Median age (years [interquartile range])	40 [22–59]	47 (29–63)	42 [11–64]

ISSN: 1743-422X