Report on the pandemic of influenza, 1918-19 / Ministry of Health.

  • Great Britain. Ministry of Health.
Date:
1920
Catalogue details

Licence: Public Domain Mark

Credit: Report on the pandemic of influenza, 1918-19 / Ministry of Health. Source: Wellcome Collection.

    674/718 (page 544)
    AUTUMN. — i bedevins” Wiese leben 5 iene ole Sat ie ish) ee Age Group. c I ORT SN ctr seme VR YG Un ar IB I Soh BE 2 s 5 a = : Be 7 No. of cases] — LA T2016 ell 20 ae 2a aoa ees oe) 1 1 | - 134 Percentage | } of persons in the age- — |2°5]8°9}7°3| 8:5 | 5-2) 7-2 |10°8/15°3) 3-6] 1°4] 2-3] 20 | 8-2 group | investigated.| | | ih - on WINTER. No. of cases | — 2 6 | 15 | 16 | 12 8 | 25 | 24 1 17 3 1} - 129 Percentage | | of persons in | | the age- | }~ |5'1/4°4|/6°8! 8 |7°05) 8°2|19°9/9-7 |12°3/4°3)2°3)] -— | 7:9 group | investigated. ) | Apparently the greatest proportion of cases occurred in a different age group in each wave, and each time the incidence was more severe among older people than in the previous wave. In the Summer, persons aged 20—25 years (12°3 per cent.); in the Autumn, 35—45 years (15:3 per cent.); and in the Winter wave, 45—55 years (12°3 per cent.) were must affected. The distribution according to sex is shown as follows :— TABLE IX. Table giving Age and Sex Incidence in the several Waves, with Percentage affected of Persons in the Age Group investigated. SUMMER. June, July, August, 1918. — D C S 19 Ss 19 1S 16 19 1S 19 5 é ae oO sos 160 paar re nN nN on =e 19 To) ~ > = a Oo L 2) Females” - - ~ 1 6 7 Bete LOM ape sls 8 z l 68 Percentage 2 - |1°2)5°5)6°6) 5:3 [14°0]11°1] 9°6 1138-11 4°544°5] - Males - - Percentage — |4°7|1°7 |10°8| 7-3 10°5] 7-6 7* 5] €