This Red Cross volunteer was drawing blood from an African-American woman to be tested for its concentration of antibodies during a 1976 influenza (swine flu) outbreak.
This volunteer is testing for the ”A/New Jersey/76” influenza virus, also known as the ”swine flu” virus. In 1976, a Fort Dix Soldier was infected by this virus and later died; this prompted a massive vaccination campaign in the U.S.