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CDC influenza surveillance report no. 26, November 20, 1957
Filetype[PDF-3.11 MB]

  • Alternative Title:
    Influenza 1957 cumulative through November 19 [map]
  • Description:
    I. Summary of information -- II. Influenza map and table -- III. Current analysis of influenza and pneumonia mortality -- IV. National Health Survey data. -- V. Industrial absentee data -- VI. Influenza vaccine and distribution -- VII. Studies on influenza vaccine effectiveness -- VIII. Miscellany

    "Influenza and pneumonia mortality the United States as a whole has decreased this week for the first time since the beginning of the Asian strain influenza epidemic. Deaths reported for the week ending November 16 numbered 766, compared to 889 for the week ending November 9 and 859 for the previous week. Thus, the current epidemic appears to have passed its peak and started to decline. Every division showed a, decline with the exception of the Pacific, which reported a striking increase over the week ending November 9. At least I390 counties have now reported influenza since the first appearance of the Asian strain in the United States. This represents 45% of the counties of the nation, States reporting large numbers of new counties affected were primarily those of the northern Middle West and a central band of Eastern States. Scattered reports continue to come to CDC from the Mountain States, although the influenza and pneumonia mortality curve has returned to the baseline for the division. The New England and Middle Atlantic divisions are now reporting few new counties with outbreaks, which is in accord with the rapidly declining mortality curves for these areas. Industrial absenteeism in the 36 reporting cities appears to be leveling off or declining. A few cities have returned to normal absentee rates, Only a few cities showed increases during the most recent reporting week and, of these, only three (Seattle, Nashville, and Jacksonville) showed large increases. The first rise in industrial absenteeism in a city appears to be consistently followed, about one week later, by the first significant rise in influenza and pneumonia mortality. A total of 44,570,294 ml. of' Asian strain influenza vaccine has been released through November 13, This includes 4,187,575 ml. released since November 6. In this last release were 1,804,060 ml. of' 400 cca vaccine and 957,845 ml. of polyvalent vaccine. National Health Survey data shows that the week ending October 19 was the peak week for the United States both in terms of number of new cases involving one or more days of bed disability and, in terms of average number of persons in bed each day. The peak of the mortality curve therefore lags about three; or four weeks behind the Health Survey peaks for disease incidence. Information on two groups of influenza-associated deaths has recently been reported to CDC. These studies have been summarized and compared in this report. Under Miscellany will be found an interesting report of isolation of Asian strain influenza virus from a lymph node in a fatal case." - p. [2]

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