Influenza : Far Eastern strain, 1957 : Confirmed cases, Confirmed and suspect outbreaks [map, July 27, 1957]

Communicable Disease Center (U.S.), Influenza Surveillance Unit.

"Further small outbreaks among Boy Scouts returned from the Jamboree. These have been reported from Texas and two areas in Alabama. At least one additional outbreak has been reported from a military facility in California. Another local outbreak of influenza-like illness has occurred among migrant workers in Sonoma County, California. At present, only small groups among these workers have been involved. Due to some difficulty in performing hemagglutination-inhibition tests with currently available antigen, isolates from several outbreaks have so far been grouped only by complement-fixation tests. Influenza A virus has been identified in some outbreaks listed in Table II. These will not be noted until confirmation of Asian strain virus has been obtained." - p. 2

"July 27, 1957." Includes map: Influenza : Far Eastern strain, 1957 : Confirmed cases, Confirmed and suspect outbreaks. "For official use only; not for publication."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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