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The article presents a study on swine influenza virus vaccination in the U.S. The preliminary analysis of the data establishes that the vaccine preparations contained an inciting factor or trigger element that resulted in the development of clinically recognized Guillain-Barré syndrome. No marked differences were observed in age incidence, geographical distribution, manufacturer or type of vaccine, or method of administration.

Presents an overview of a speech by Doctor Alexander D. Langmuir of the U.S. Public Health Service, delivered at the Departmental Council of the Department of Health, Education and Welfare on April 14, 1955. Discussion on the achievement of the new poliomyelitis vaccine; Major breakthroughs in the form of new discoveries and contributions to basic knowledge about poliomyelitis cited by Langmuir; Expectations of Langmuir on the acceptance of the vaccine.

A letter to the editor is presented in response to the article about swine influenza virus vaccine incident in the September 1979 issue.