English: An adult female receiving a vaccination that was administered by a public health clinician, by way of a jet injector during the nationwide swine flu vaccination campaign, which began October 1, 1976. This rare influenza strain, “A/New Jersey/76 (Hsw1N1) influenza virus”, was reported among soldiers at Fort Dix, New Jersey, where one patient died. A very similar strain killed 500,000 people in the United States, and more than 20 million worldwide, during the pandemic of 1918–1919. In response to the 1976 outbreak, in order to prevent another epidemic, 50 million Americans were vaccinated during a 10 week period, setting an immunization world record.