Abstract
During the period 1920-51, influenza mortality-rates—both during epidemic and non-epidemic years—have, in most countries for which data are available, shown a downward trend, the rate of fall in mortality being, in general, accelerated after the middle 1930's. The author discusses the various factors which may have contributed to this decline, but emphasizes that the reason for it cannot at present be fully explained, nor—owing to the comparatively short period during which the accelerated fall has been apparent—can a conclusion yet be drawn as to whether influenza mortality has already reached its lowest level or whether it will continue its downward trend in the future.
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Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- COLLINS S. D., LEHMANN J. Trends and epidemics of influenza and pneumonia: 1918-1951. Public Health Rep. 1951 Nov 16;66(46):1487–1516. [PMC free article] [PubMed] [Google Scholar]
- MARTIN W. J. Recent changes in the death rate from influenza. Br Med J. 1950 Feb 4;1(4648):267–267. doi: 10.1136/bmj.1.4648.267. [DOI] [PMC free article] [PubMed] [Google Scholar]