Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

The Chronicle of Influenza Epidemics

W.I.B. Beveridge
History and Philosophy of the Life Sciences
Vol. 13, No. 2 (1991), pp. 223-234
Stable URL: http://www.jstor.org/stable/23331022
Page Count: 12
  • Read Online (Free)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Chronicle of Influenza Epidemics
Preview not available

Abstract

Epidemics that were probably influenza have been reported throughout recorded history. There were 13 fairly severe epidemics during the 18th century and 12 during the 19th century. Probably 8 of these 25 were influenza pandemics. In the 20th century there have been 4 pandemics (1918/19, 1957/58, 1968/69 and 1977) due to the emergence of new subtypes of influenza A virus. The great pandemic of 1918/19 caused an estimated 20 million deaths. Between pandemics usually there have been epidemics of varying severity at intervals of one to three years and a trickle of sporadic cases every winter. The morbidity and mortality rates have varied greatly from epidemic to epidemic and from place to place during the same epidemic. Generally the morbidity has been lowest in people over 60 years of age, but, except for 1918/19, the mortality has been predominantly in old people. The epidemic behaviour of influenza has been so erratic and difficult to understand that there are still a few scientists who consider that extraterrestrial influences operate. These views are not taken seriously by most virologists but there are puzzling aspects of influenza that are not yet understood.

Page Thumbnails

  • Thumbnail: Page 
[223]
    [223]
  • Thumbnail: Page 
224
    224
  • Thumbnail: Page 
225
    225
  • Thumbnail: Page 
226
    226
  • Thumbnail: Page 
227
    227
  • Thumbnail: Page 
228
    228
  • Thumbnail: Page 
229
    229
  • Thumbnail: Page 
230
    230
  • Thumbnail: Page 
231
    231
  • Thumbnail: Page 
232
    232
  • Thumbnail: Page 
233
    233
  • Thumbnail: Page 
234
    234