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Table 1 Characteristics of study subjects upon enrollment, Guangdong China, 2013

From: Antibodies against H10N8 avian influenza virus among animal workers in Guangdong Province before November 30, 2013, when the first human H10N8 case was recognized

Exposure variables

Total (number = 827)

Zoo workers (number = 48)

Swine workers (number = 352)

Slaughterhouse workers (number = 24)

Veterinarians (number = 26)

Poultry workers (number = 76)

Non-animal exposed controls (number = 107)

Poultry retailers in agricultural-trade (number = 194)

Gender

        

 Female

253

11

109

0

0

18

45

70

 Male

574

37

243

24

26

58

62

124

Age-group (years)

        

 < 20

30

2

4

0

0

1

19

4

 20 to 30

160

19

53

2

4

14

18

50

 30 to 40

228

18

93

6

8

26

17

60

 >40

409

9

202

16

14

35

53

80

Mean age (years)

38.5

31.3

40.5

42.2

40.4

37.1

38.5

36.5