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Table 1 Season averages of weekly meteorological data, proportions of positive specimens and numbers of death

From: Seasonal effects of influenza on mortality in a subtropical city

 

Whole year

Autumn

Winter

Spring

Summer

Variables

Mean

(SD)

Mean

(SD)

Mean

(SD)

Mean

(SD)

Mean

(SD)

Temperature

23.7

(4.7)

25.6

(2.7)

17.6

(2.4)

22.9

(3.0)

28.6

(1.1)

Humidity

78.0

(7.8)

74.5

(8.3)

74.1

(8.9)

82.0

(5.2)

81.3

(3.9)

Virus isolation (%)

          

   Influenza

10.1

(10.1)

2.0

(2.7)

13.2

(14.0)

13.0

(9.0)

12.0

(6.2)

   RSV

8.8

(6.8)

8.7

(7.1)

3.0

(3.3)

10.6

(5.7)

12.8

(6.4)

   Adenovirus

4.2

(3.4)

3.7

(2.9)

4.1

(2.7)

4.2

(3.9)

4.9

(3.8)

   PIV-1

1.5

(2.6)

2.4

(3.4)

2.3

(3.2)

0.5

(0.8)

0.6

(1.2)

   PIV-2

0.3

(0.6)

0.5

(0.7)

0.3

(0.5)

0.1

(0.4)

0.3

(0.5)

   PIV-3

2.8

(2.1)

2.9

(2.5)

2.4

(1.9)

3.2

(2.0)

2.6

(2.0)

Mortality

          

   All-cause

          

All ages

623.3

(65.1)

572.7

(38.6)

682.6

(59.4)

644.7

(58.2)

593.4

(34.2)

65+

468.5

(61.3)

420.0

(38.3)

524.6

(56.7)

488.0

(53.2)

441.3

(31.0)

   CRD

          

All ages

278.4

(48.8)

238.8

(21.9)

321.5

(46.3)

296.5

(46.7)

256.8

(23.5)

65+

242.7

(45.0)

205.8

(20.9)

284.9

(41.4)

258.4

(41.9)

221.7

(19.9)

   P&I

          

All ages

65.0

(15.8)

56.8

(13.4)

70.4

(15.4)

67.0

(15.6)

65.9

(15.4)

65+

59.5

(14.3)

52.2

(12.4)

64.8

(13.5)

61.1

(14.3)

59.9

(14.1)

   COPD

          

All ages

40.7

(12.2)

30.4

(5.9)

47.2

(13.1)

47.3

(11.3)

38.1

(7.8)

65+

37.1

(11.3)

27.4

(5.6)

43.8

(11.9)

43.0

(10.6)

34.3

(6.9)

   Cerebrovascular

          

All ages

61.9

(13.5)

55.0

(9.2)

72.2

(12.6)

66.0

(13.5)

54.5

(8.9)

65+

52.8

(12.6)

46.0

(8.6)

61.7

(11.7)

57.2

(12.6)

46.0

(8.6)

   IHD

          

All ages

62.4

(13.9)

54.2

(8.5)

74.5

(14.3)

65.5

(13.0)

55.6

(7.6)

65+

53.6

(12.8)

46.0

(7.6)

65.7

(12.7)

55.8

(12.0)

47.0

(6.9)