CDC influenza surveillance report no. 47, April 22, 1959
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CDC influenza surveillance report no. 47, April 22, 1959

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    "Influenza and pneumonia deaths reported from 108 United States cities rose sharply above the seasonal threshold during the week ending April 4, peaked during the week ending April 11, and fell back toward the normal level during the following week. Closer examination of these reports reveals that the upswing was due primarily to increases in reported deaths in New York City (Middle Atlantic region) and Detroit and Chicago (East North Central region). Other urban areas in these regions showed only small increases in numbers of influenza and pneumonia deaths during the two week period. Much of the excess mortality occurred in persons over 65 years of age in all three cities, apparently reflecting spread of influenzal illnesses into age groups older than those that have been primarily affected by the disease in the past three months. In most States, however, influenza-like illness still appears to be affecting persons of school and college age, primarily, and industrial absenteeism continues to remain at normal seasonal levels. Through April 22, 1959, the Influenza Surveillance Unit has learned of laboratory identicications of Type B influenza in 20 states, of Type A (Subgroup unspecified) influenza in 5 states, and of Asian (A2) influenza in 5 states. Adenoviruses have recently been identified from cases of influenza-like illness in Alaska and Mississippi. Altogether, 32 states have now experienced outbreaks or increased prevalence of illnesses resembling influenza since January 1959." - p. 2
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    47 April 22, 1959.

    This report was prepared by Dr. Frederick L. Dunn, Chief, Surveillance Unit, CDC.

    "For official use only; not for publication." - cover

    "Information contained in this report is a summary of data reported to CDC by State Health Departments, Epidemic Intelligence Service Officers, collaborating influenza diagnostic laboratories, and other pertinent sources. Much if it is preliminary in nature and is primarily in nature and is primarily intended for those involved in influenza control activities. It is understood that the contents of these report will not be released to the press, except by the Office of the Surgeon General, Public Health Service, U.S. Department of Health, Education and Welfare. State Health Officers, of course, will judge the advisability of releasing any information from their own state." - cover

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