Table 1

Populations and observed proportions affected in summer, autumn & winter waves in 1918-19 pandemic

Population

N

- - -

S- -

-A-

- -W

SA-

S-W

-AW

SAW


South Shields

462

844.2

26.0

51.9

67.1

2.2

2.2

6.5

0


Leicester

4619

719.9

62.1

131.8

69.9

3.0

4.8

8.0

0.4


Wigan

1075

774.0

40.9

73.5

108.8

0

0

1.9

0.9


Newcastle

4461

814.4

52.5

46.6

73.1

0.4

8.7

3.8

0.4


Manchester

4686

747.1

130.8

83.7

15.6

14.3

5.5

2.3

0.6


Blackburn

1284

785.0

75.5

56.1

64.6

5.5

4.7

7.8

0.8


Widnes

3417

696.5

113.5

77.8

99.5

4.1

6.1

2.3

0


London police

746

749.3

61.7

144.8

32.2

5.4

0

6.7

0


Cambridge Uni

1766

457.0

206.7

208.4

73.6

18.7

9.6

21.5

4.5


Clifton College

451

232.8

153.0

84.3

188.5

20.0

157.4

135.3

28.8


Haileybury

515

302.9

227.2

93.2

205.8

60.2

42.7

48.5

19.4


Finchley School

1224

550.7

90.7

312.9

23.7

14.7

4.1

3.3

0


ALL

24706

703.1

96.5

105.0

67.5

8.1

9.3

8.9

1.6


N = total number of persons surveyed in each population. - - -: proportion of persons (per 1000) not reporting symptoms in any wave; S - -: proportion reporting symptoms in summer wave only; SA-: proportion of persons reporting symptoms in the summer and autumn waves, but not in the winter wave. SAW: proportion reporting symptoms in all three waves, etc.

Mathews et al. BMC Infectious Diseases 2010 10:128   doi:10.1186/1471-2334-10-128

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