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CDC influenza surveillance report no. 28, December 3, 1957
  • Published Date:
    December 3, 1957
Filetype[PDF - 2.89 MB]


Details:
  • Corporate Authors:
    Communicable Disease Center (U.S.), Influenza Surveillance Unit.
  • 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. Epidemic trends -- Appendix A: Asian influenza vaccine studies

    "Approximately 54% of the counties of the United States have now reported influenza occurrences since the first appearance of the Asian strain in this country. For the period November 20-December 2, 262 new county occurrences (outbreaks or confirmed Asian strain cases) were reported to CDC by 20 states, bringing the total number of counties involved to 1652. All states appear to be experiencing declining incidence and several have returned to normal respiratory disease rates for the season. Influenza and pneumonia mortality for the United States as a whole has declined sharply again. For the week ending November 30, 556 deaths were reported. All divisions show declining mortality but only the Middle Atlantic and Mountain skates have dropped below the "epidemic threshold." Industrial absentee rates had returned to normal in 9 of the 36 reporting cites by November 23. Many other cities were close to normal rates at this time, and all rates were below peak levels. A total o f 51,653,589 ml. of Asian strain influenza vaccine has been released through November 27. This includes 2, 775,965 ml. released since November 21, of which 121,500 ml. were 200 cca monovalent vaccine and .the remainder 400 cca monovalent vaccine . Estimated vaccine production for December has been dropped from 11,175,000 ml. to 8,175,000 ml. National Health Survey data showed declines in both the average number of persons in bed each day and in new cases involving one or more days of bed disability for the week ending November 9. A series of graphs presented in the final section of this report compares some of the methods of measuring the influenza epidemic that have been used by the Influenza Surveillance Unit this fall. These graphs are based on preliminary data, particularly in the case of new county reports, but they are presented at this time to show that each method, in its own way has been helpful in describing the course of the epidemic. A summary of Asian strain influenza vaccine studies that have been carried out this fall is appended to this report." - p. [2]

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