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Influenza surveillance report no. 80, November 2, 1964
Filetype[PDF-2.21 MB]

  • Alternative Title:
    Outbreaks of influenza-like disease, 1964 ; Recommendations for influenza immunization and control in the civilian population ; 1964-65 Recommendations for influenza immunization and control in the civilian population ;
  • Description:
    I. Summary -- II. Epidemic reports -- III. International reports -- IV. Laboratory reports -- V. Special reports [Appendix I. 1964-65 Recommendations for influenza immunization and control in the civilian population / Advisory Committee on Immunization Practice]

    "United States: No outbreaks of influenza documented by virus isolation have been reported in the continental U.S. since pUblication of the last Influenza Surveillance Report (No. 79, April 30, 1964). However, scattered clusters of febrile respiratory illness occurring in parts of Oregon have involved individuals, at least some of whom show serological evidence of A2 influenza infection. A2 virus has recently been lsolated from a case of characteristic clinical influenza representing part of a relatively widespread but low level outbreak in Puerto Rico. Serological evidence of infection has been demonstrated among a number of such cases from various part sof the Island. The virus isolate now being characterized in detail is readily identifiedusing antisera against A2/Japan/170/1962widely employed in virus serological laboratories. Preliminary communications from Hawaii describe an outbreak of respiratory illness on Oahu Island during the past month which appears serologically to be caused by influenza virus Type B, seemingly more related to the 1959 Maryland strain than to a 1962 Taiwan isolate. The occurrence of these unseasonal outbreaks of influenza is presently not expected to alter the limited prospects for major outbreaks on the continent this winter. Careful surveillance in the coming weeks will be of importance to document the anticipated pattern. International: Isolated outbreaks of influenza attributable to A2 strains have occurred sporadically in various parts of the world since mid-spring. No epidemiological or clinical variations have emerged from these epidemics to suggest altered virus capacity. Virus strains have varied somewhat, but available evidence does not support a major antigenic shift." - p. [1]

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