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CDC influenza surveillance report no. 24, November 6, 1957
  • Published Date:
    November 6, 1957
Filetype[PDF - 3.18 MB]


Details:
  • Corporate Authors:
    Communicable Disease Center (U.S.), Influenza Surveillance Unit.
  • Description:
    I. Summary of information -- II. Influenza maps and tables -- III. Epidemic and case reports -- IV. Current analysis of influenza aund pneumonia mortality -- V. Influenza complications and deaths -- VI. Industrial absentee data -- VII. Influenza vaccine production and distribution -- VIII. Miscellany

    "The current United States map off influenza distribution reveals an impressive increase over last week in the number of counties which have experienced influenza since June1957. About two-thirds of this increase represents new outbreaks during the past week, but a, number of states which were not adequately portrayed on previous maps have been brought up to date. It will be noted that the form of the map has been changed somewhat. Only dots were used; the attempt to indicate counties with county-wide epidemics has been abandoned. Through November 5, CDC has received reports of influenza occurrences from 1019 or 3% of the counties of the United States. Excess mortality for the United States has leveled off slightly this week. It seems likely that a peak is rapidly approaching for the nation. The nationwide total for the past week was 853 deaths due to influenza and pneumonia as compared to 774 for the previous two weeks. Several regions-- Mid-Atlantic, South Atlantic, and Mountain--have already reached excess mortality peaks and appear to be on the way down. Divisions reporting increases during the past week include New England, East North Central and East South Central. The Pacific Coast division still remains at a normal level.A total of 34,192,047 ml of Asian strain influenza vaccine has been released through October 31. This includes 7,035,560 ml released since October 23. This downward revision of anticipated vaccine production for the month of November reflects the change in potency from 200 to 400 cca units. In the Miscellany section this change is explained and new recommended dosages are stated. A further measure of the incidence of influenza-like illness is provided by the National Health Survey. This Survey takes a sample of the population and determines its stake of health by questionnaire and interview. Approximately 8,500,000 persons were estimated ill in bed with respiratory disease during the week ending October 5. A discussion of the types of influenza complications which have been observed is presented. It is pointed out that pneumonia is the most common complication, that most of the pneumonia is pneumococcal, and that the pneumonias resulting in death are often staphylococcal. Deaths from sterile pneumonia in proven cases of influenza have been observed. Other complications of influenza that have been rarely observed are myocarditis and encephalitis. It must be stressed that no Asian strain confirmed cases with these complications have yet been reported. Laboratories are advised that reporting of influenza serological titres will henceforth be in terms of initial serum dilultion.." - p. 2

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