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Table 1 Epidemiological characteristics of the suspected and the confirmed cases of influenza A

From: Risk factors for hospital-acquired influenza A and patient characteristics: a matched case-control study

Variables

Suspected influenza A No.

RT-PCR positive No.

Positive rate %

Total patients

1336

412

30.8

 Nephrology

70

43

61.4

 Geriatric

103

47

45.6

 Neurology

124

46

37.1

 Hematology

86

28

32.6

 Cardiac Surgery

114

35

30.7

 Cardiology

118

36

30.5

 Gastroenterology

124

33

26.6

 Rest departments

597

144

24.1

Sex

 Male

764

232

30.4

 Female

572

180

31.5

Influenza A season

 December 2018

14

5

35.7

 January 2019

673

278

41.3

 February 2019

308

83

26.9

 March 2019

235

29

12.3

 April 2019

106

17

16.0

Age, years

  > 65

336

111

33.0

  > 18 ~ 65

901

271

30.1

  > 12 ~ 18

34

9

26.5

  > 6 ~ 12

12

4

33.3

  ≥ 6

53

17

32.1